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< ol class = "chapter" > < li class = "chapter-item expanded " > < a href = "The-Z-Shell-Manual.html" > < strong aria-hidden = "true" > 1.< / strong > The Z Shell Manual< / a > < / li > < li class = "chapter-item expanded " > < a href = "Introduction.html" > < strong aria-hidden = "true" > 2.< / strong > Introduction< / a > < / li > < li class = "chapter-item expanded " > < a href = "Roadmap.html" > < strong aria-hidden = "true" > 3.< / strong > Roadmap< / a > < / li > < li class = "chapter-item expanded " > < a href = "Invocation.html" > < strong aria-hidden = "true" > 4.< / strong > Invocation< / a > < / li > < li class = "chapter-item expanded " > < a href = "Files.html" > < strong aria-hidden = "true" > 5.< / strong > Files< / a > < / li > < li class = "chapter-item expanded " > < a href = "Shell-Grammar.html" > < strong aria-hidden = "true" > 6.< / strong > Shell Grammar< / a > < / li > < li class = "chapter-item expanded " > < a href = "Redirection.html" > < strong aria-hidden = "true" > 7.< / strong > Redirection< / a > < / li > < li class = "chapter-item expanded " > < a href = "Command-Execution.html" > < strong aria-hidden = "true" > 8.< / strong > Command Execution< / a > < / li > < li class = "chapter-item expanded " > < a href = "Functions.html" > < strong aria-hidden = "true" > 9.< / strong > Functions< / a > < / li > < li class = "chapter-item expanded " > < a href = "Jobs-_0026-Signals.html" > < strong aria-hidden = "true" > 10.< / strong > Jobs & Signals< / a > < / li > < li class = "chapter-item expanded " > < a href = "Arithmetic-Evaluation.html" > < strong aria-hidden = "true" > 11.< / strong > Arithmetic Evaluation< / a > < / li > < li class = "chapter-item expanded " > < a href = "Conditional-Expressions.html" > < strong aria-hidden = "true" > 12.< / strong > Conditional Expressions< / a > < / li > < li class = "chapter-item expanded " > < a href = "Prompt-Expansion.html" > < strong aria-hidden = "true" > 13.< / strong > Prompt Expansion< / a > < / li > < li class = "chapter-item expanded " > < a href = "Expansion.html" > < strong aria-hidden = "true" > 14.< / strong > Expansion< / a > < / li > < li class = "chapter-item expanded " > < a href = "Parameters.html" > < strong aria-hidden = "true" > 15.< / strong > Parameters< / a > < / li > < li class = "chapter-item expanded " > < a href = "Options.html" > < strong aria-hidden = "true" > 16.< / strong > Options< / a > < / li > < li class = "chapter-item expanded " > < a href = "Shell-Builtin-Commands.html" > < strong aria-hidden = "true" > 17.< / strong > Shell Builtin Commands< / a > < / li > < li class = "chapter-item expanded " > < a href = "Zsh-Line-Editor.html" > < strong aria-hidden = "true" > 18.< / strong > Zsh Line Editor< / a > < / li > < li class = "chapter-item expanded " > < a href = "Completion-Widgets.html" > < strong aria-hidden = "true" > 19.< / strong > Completion Widgets< / a > < / li > < li class = "chapter-item expanded " > < a href = "Completion-System.html" > < strong aria-hidden = "true" > 20.< / strong > Completion System< / a > < / li > < li class = "chapter-item expanded " > < a href = "Completion-Using-compctl.html" > < strong aria-hidden = "true" > 21.< / strong > Completion Using compctl< / a > < / li > < li class = "chapter-item expanded " > < a href = "Zsh-Modules.html" > < strong aria-hidden = "true" > 22.< / strong > Zsh Modules< / a > < / li > < li class = "chapter-item expanded " > < a href = "Calendar-Function-System.html" > < strong aria-hidden = "true" > 23.< / strong > Calendar Function System< / a > < / li > < li class = "chapter-item expanded " > < a href = "TCP-Function-System.html" > < strong aria-hidden = "true" > 24.< / strong > TCP Function System< / a > < / li > < li class = "chapter-item expanded " > < a href = "Zftp-Function-System.html" class = "active" > < strong aria-hidden = "true" > 25.< / strong > Zftp Function System< / a > < / li > < li class = "chapter-item expanded " > < a href = "User-Contributions.html" > < strong aria-hidden = "true" > 26.< / strong > User Contributions< / a > < / li > < / ol >
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< main >
<!-- START doctoc generated TOC please keep comment here to allow auto update -->
<!-- DON'T EDIT THIS SECTION, INSTEAD RE - RUN doctoc TO UPDATE -->
< p > < strong > Table of Contents< / strong > < em > generated with < a href = "https://github.com/thlorenz/doctoc" > DocToc< / a > < / em > < / p >
< ul >
< li > < a href = "#25-zftp-function-system" > 25 Zftp Function System< / a >
< ul >
< li > < a href = "#251-description" > 25.1 Description< / a > < / li >
< li > < a href = "#252-installation" > 25.2 Installation< / a > < / li >
< li > < a href = "#253-functions" > 25.3 Functions< / a >
< ul >
< li > < a href = "#2531-opening-a-connection" > 25.3.1 Opening a connection< / a > < / li >
< li > < a href = "#2532-directory-management" > 25.3.2 Directory management< / a > < / li >
< li > < a href = "#2533-status-commands" > 25.3.3 Status commands< / a > < / li >
< li > < a href = "#2534-retrieving-files" > 25.3.4 Retrieving files< / a > < / li >
< li > < a href = "#2535-sending-files" > 25.3.5 Sending files< / a > < / li >
< li > < a href = "#2536-closing-the-connection" > 25.3.6 Closing the connection< / a > < / li >
< li > < a href = "#2537-session-management" > 25.3.7 Session management< / a > < / li >
< li > < a href = "#2538-bookmarks" > 25.3.8 Bookmarks< / a > < / li >
< li > < a href = "#2539-other-functions" > 25.3.9 Other functions< / a > < / li >
< / ul >
< / li >
< li > < a href = "#254-miscellaneous-features" > 25.4 Miscellaneous Features< / a >
< ul >
< li > < a href = "#2541-configuration" > 25.4.1 Configuration< / a > < / li >
< li > < a href = "#2542-remote-globbing" > 25.4.2 Remote globbing< / a > < / li >
< li > < a href = "#2543-automatic-and-temporary-reopening" > 25.4.3 Automatic and temporary reopening< / a > < / li >
< li > < a href = "#2544-completion" > 25.4.4 Completion< / a > < / li >
< / ul >
< / li >
< / ul >
< / li >
< / ul >
<!-- END doctoc generated TOC please keep comment here to allow auto update -->
< p > < span id = "Zftp-Function-System" > < / span >
< span id = "Zftp-Function-System-1" > < / span > < / p >
< h1 id = "25-zftp-function-system" > < a class = "header" href = "#25-zftp-function-system" > 25 Zftp Function System< / a > < / h1 >
< p > < span id = "index-zftp-function-system" > < / span >
< span id = "index-FTP_002c-functions-for-using-shell-as-client" > < / span > < / p >
< hr / >
< p > < span id = "Description-4" > < / span > < / p >
< h2 id = "251-description" > < a class = "header" href = "#251-description" > 25.1 Description< / a > < / h2 >
< p > This describes the set of shell functions supplied with the source
distribution as an interface to the < code > zftp< / code > builtin command, allowing you
to perform FTP operations from the shell command line or within
functions or scripts. The interface is similar to a traditional FTP
client (e.g. the < code > ftp< / code > command itself, see man page ftp(1)), but as it
is entirely done within the shell all the familiar completion, editing
and globbing features, and so on, are present, and macros are
particularly simple to write as they are just ordinary shell functions.< / p >
< p > The prerequisite is that the < code > zftp< / code > command, as described in < a href = "Zsh-Modules.html#The-zsh_002fzftp-Module" > The
zsh/zftp Module< / a > , must be
available in the version of < code > zsh< / code > installed at your site. If the shell
is configured to load new commands at run time, it probably is: typing
‘ < code > zmodload zsh/zftp< / code > ’ will make sure (if that runs silently, it has
worked). If this is not the case, it is possible < code > zftp< / code > was linked into
the shell anyway: to test this, type ‘ < code > which zftp< / code > ’ and if < code > zftp< / code > is
available you will get the message ‘ < code > zftp: shell built-in command< / code > ’ .< / p >
< p > Commands given directly with < code > zftp< / code > builtin may be interspersed between
the functions in this suite; in a few cases, using < code > zftp< / code > directly may
cause some of the status information stored in shell parameters to
become invalid. Note in particular the description of the variables
< code > $ZFTP_TMOUT< / code > , < code > $ZFTP_PREFS< / code > and < code > $ZFTP_VERBOSE< / code > for < code > zftp< / code > .< / p >
< hr / >
< p > < span id = "Installation" > < / span > < span id = "Installation-1" > < / span > < / p >
< h2 id = "252-installation" > < a class = "header" href = "#252-installation" > 25.2 Installation< / a > < / h2 >
< p > You should make sure all the functions from the < code > Functions/Zftp< / code >
directory of the source distribution are available; they all begin with
the two letters ‘ < code > zf< / code > ’ . They may already have been installed on your
system; otherwise, you will need to find them and copy them. The
directory should appear as one of the elements of the < code > $fpath< / code > array
(this should already be the case if they were installed), and at least
the function < code > zfinit< / code > should be autoloaded; it will autoload the rest.
Finally, to initialize the use of the system you need to call the
< code > zfinit< / code > function. The following code in your < code > .zshrc< / code > will arrange for
this; assume the functions are stored in the directory < code > ~/myfns< / code > :< / p >
< div class = "example" >
< pre > < code class = "language-example" > fpath=(~/myfns $fpath)
autoload -U zfinit
zfinit
< / code > < / pre >
< / div >
< p > Note that < code > zfinit< / code > assumes you are using the < code > zmodload< / code > method to load
the < code > zftp< / code > command. If it is already built into the shell, change
< code > zfinit< / code > to < code > zfinit -n< / code > . It is helpful (though not essential) if the
call to < code > zfinit< / code > appears after any code to initialize the new completion
system, else unnecessary < code > compctl< / code > commands will be given.< / p >
< hr / >
< p > < span id = "Zftp-Functions" > < / span > < span id = "Functions-2" > < / span > < / p >
< h2 id = "253-functions" > < a class = "header" href = "#253-functions" > 25.3 Functions< / a > < / h2 >
< p > The sequence of operations in performing a file transfer is essentially
the same as that in a standard FTP client. Note that, due to a quirk of
the shell’ s < code > getopts< / code > builtin, for those functions that handle options
you must use ‘ < code > -``-< / code > ’ rather than ‘ < code > -< / code > ’ to ensure the remaining
arguments are treated literally (a single ‘ < code > -< / code > ’ is treated as an
argument).< / p >
< hr / >
< p > < span id = "Opening-a-connection" > < / span > < / p >
< h3 id = "2531-opening-a-connection" > < a class = "header" href = "#2531-opening-a-connection" > 25.3.1 Opening a connection< / a > < / h3 >
< p > < span id = "index-zfparams" > < / span > < / p >
< p > < code > zfparams< / code > [ < code > host< / code > [ < code > user< / code > [ < code > password< / code > ... ] ] ]< / p >
< p > Set or show the parameters for a future < code > zfopen< / code > with no arguments. If
no arguments are given, the current parameters are displayed (the
password will be shown as a line of asterisks). If a < code > host< / code > is given,
and either the < code > user< / code > or < code > password< / code > is not, they will be prompted for;
also, any parameter given as ‘ < code > ?< / code > ’ will be prompted for, and if the
‘ < code > ?< / code > ’ is followed by a string, that will be used as the prompt. As
< code > zfopen< / code > calls < code > zfparams< / code > to store the parameters, this usually need not
be called directly.< / p >
< p > A single argument ‘ < code > -< / code > ’ will delete the stored parameters. This will
also cause the memory of the last directory (and so on) on the other
host to be deleted.< / p >
< p > < span id = "index-zfopen" > < / span > < / p >
< p > < code > zfopen< / code > [ < code > -1< / code > ] [ < code > host< / code > [ < code > user< / code > [ < code > password< / code > [ < code > account< / code > ] ]
] ]< / p >
< p > If < code > host< / code > is present, open a connection to that host under username
< code > user< / code > with password < code > password< / code > (and, on the rare occasions when it is
necessary, account < code > account< / code > ). If a necessary parameter is missing or
given as ‘ < code > ?< / code > ’ it will be prompted for. If < code > host< / code > is not present, use a
previously stored set of parameters.< / p >
< p > If the command was successful, and the terminal is compatible with
< code > xterm< / code > or is < code > sun-cmd< / code > , a summary will appear in the title bar, giving
the local < code > host:directory< / code > and the remote < code > host:directory< / code > ; this is
handled by the function < code > zftp_chpwd< / code > , described below.< / p >
< p > Normally, the < code > host< / code > , < code > user< / code > and < code > password< / code > are internally recorded for
later re-opening, either by a < code > zfopen< / code > with no arguments, or
automatically (see below). With the option ‘ < code > -1< / code > ’ , no information is
stored. Also, if an open command with arguments failed, the parameters
will not be retained (and any previous parameters will also be deleted).
A < code > zfopen< / code > on its own, or a < code > zfopen -1< / code > , never alters the stored
parameters.< / p >
< p > Both < code > zfopen< / code > and < code > zfanon< / code > (but not < code > zfparams< / code > ) understand URLs of the
form < code > ftp://``host< / code > /< code > path...< / code > as meaning to connect to the < code > host< / code > , then
change directory to < code > path< / code > (which must be a directory, not a file). The
‘ < code > ftp://< / code > ’ can be omitted; the trailing ‘ < code > /< / code > ’ is enough to trigger
recognition of the < code > path< / code > . Note prefixes other than ‘ < code > ftp:< / code > ’ are not
recognized, and that all characters after the first slash beyond < code > host< / code >
are significant in < code > path< / code > .< / p >
< p > < span id = "index-zfanon" > < / span > < / p >
< p > < code > zfanon< / code > [ < code > -1< / code > ] < code > host< / code > < / p >
< p > Open a connection < code > host< / code > for anonymous FTP. The username used is
‘ < code > anonymous< / code > ’ . The password (which will be reported the first time) is
generated as < code > user``@``host< / code > ; this is then stored in the shell parameter
< code > $EMAIL_ADDR< / code > which can alternatively be set manually to a< / p >
< hr / >
< p > < span id = "Directory-management" > < / span > < / p >
< h3 id = "2532-directory-management" > < a class = "header" href = "#2532-directory-management" > 25.3.2 Directory management< / a > < / h3 >
< p > < span id = "index-zfcd" > < / span > < / p >
< p > < code > zfcd< / code > [ < code > dir< / code > ]< / p >
< p > < code > zfcd -< / code > < / p >
< p > < code > zfcd< / code > < code > old< / code > < code > new< / code > < / p >
< p > Change the current directory on the remote server: this is implemented
to have many of the features of the shell builtin < code > cd< / code > .< / p >
< p > In the first form with < code > dir< / code > present, change to the directory < code > dir< / code > . The
command ‘ < code > zfcd ..< / code > ’ is treated specially, so is guaranteed to work on
non-UNIX servers (note this is handled internally by < code > zftp< / code > ). If < code > dir< / code >
is omitted, has the effect of ‘ < code > zfcd ~< / code > ’ .< / p >
< p > The second form changes to the directory previously current.< / p >
< p > The third form attempts to change the current directory by replacing the
first occurrence of the string < code > old< / code > with the string < code > new< / code > in the
current directory.< / p >
< p > Note that in this command, and indeed anywhere a remote filename is
expected, the string which on the local host corresponds to ‘ < code > ~< / code > ’ is
converted back to a ‘ < code > ~< / code > ’ before being passed to the remote machine.
This is convenient because of the way expansion is performed on the
command line before < code > zfcd< / code > receives a string. For example, suppose the
command is ‘ < code > zfcd ~/foo< / code > ’ . The shell will expand this to a full path
such as ‘ < code > zfcd /home/user2/pws/foo< / code > ’ . At this stage, < code > zfcd< / code > recognises
the initial path as corresponding to ‘ < code > ~< / code > ’ and will send the directory
to the remote host as < code > ~/foo< / code > , so that the ‘ < code > ~< / code > ’ will be expanded by the
server to the correct remote host directory. Other named directories of
the form ‘ < code > ~name< / code > ’ are not treated in this fashion.< / p >
< p > < span id = "index-zfhere" > < / span > < / p >
< p > < code > zfhere< / code > < / p >
< p > Change directory on the remote server to the one corresponding to the
current local directory, with special handling of ‘ < code > ~< / code > ’ as in < code > zfcd< / code > .
For example, if the current local directory is < code > ~/foo/bar< / code > , then
< code > zfhere< / code > performs the effect of ‘ < code > zfcd ~/foo/bar< / code > ’ .< / p >
< p > < span id = "index-zfdir" > < / span > < / p >
< p > < code > zfdir< / code > [ < code > -rfd< / code > ] [ < code > -< / code > ] [ < code > dir-options< / code > ] [ < code > dir< / code > ]< / p >
< p > Produce a long directory listing. The arguments < code > dir-options< / code > and < code > dir< / code >
are passed directly to the server and their effect is implementation
dependent, but specifying a particular remote directory < code > dir< / code > is usually
possible. The output is passed through a pager given by the environment
variable < code > $PAGER< / code > , or ‘ < code > more< / code > ’ if that is not set.< / p >
< p > The directory is usually cached for re-use. In fact, two caches are
maintained. One is for use when there is no < code > dir-options< / code > or < code > dir< / code > , i.e.
a full listing of the current remote directory; it is flushed when the
current remote directory changes. The other is kept for repeated use of
< code > zfdir< / code > with the same arguments; for example, repeated use of ‘ < code > zfdir /pub/gnu< / code > ’ will only require the directory to be retrieved on the first
call. Alternatively, this cache can be re-viewed with the < code > -r< / code > option.
As relative directories will confuse < code > zfdir< / code > , the < code > -f< / code > option can be
used to force the cache to be flushed before the directory is listed.
The option < code > -d< / code > will delete both caches without showing a directory
listing; it will also delete the cache of file names in the current
remote directory, if any.< / p >
< p > < span id = "index-zfls" > < / span > < / p >
< p > < code > zfls< / code > [ < code > ls-options< / code > ] [ < code > dir< / code > ]< / p >
< p > List files on the remote server. With no arguments, this will produce a
simple list of file names for the current remote directory. Any
arguments are passed directly to the server. No pager and no caching is
used.< / p >
< hr / >
< p > < span id = "Status-commands" > < / span > < / p >
< h3 id = "2533-status-commands" > < a class = "header" href = "#2533-status-commands" > 25.3.3 Status commands< / a > < / h3 >
< p > < span id = "index-zftype" > < / span > < / p >
< p > < code > zftype< / code > [ < code > type< / code > ]< / p >
< p > With no arguments, show the type of data to be transferred, usually
ASCII or binary. With an argument, change the type: the types ‘ < code > A< / code > ’ or
‘ < code > ASCII< / code > ’ for ASCII data and ‘ < code > B< / code > ’ or ‘ < code > BINARY< / code > ’ , ‘ < code > I< / code > ’ or ‘ < code > IMAGE< / code > ’
for binary data are understood case-insensitively.< / p >
< p > < span id = "index-zfstat" > < / span > < / p >
< p > < code > zfstat< / code > [ < code > -v< / code > ]< / p >
< p > Show the status of the current or last connection, as well as the status
of some of < code > zftp< / code > ’ s status variables. With the < code > -v< / code > option, a more
verbose listing is produced by querying the server for its version of
events, too.< / p >
< hr / >
< p > < span id = "Retrieving-files" > < / span > < / p >
< h3 id = "2534-retrieving-files" > < a class = "header" href = "#2534-retrieving-files" > 25.3.4 Retrieving files< / a > < / h3 >
< p > The commands for retrieving files all take at least two options. < code > -G< / code >
suppresses remote filename expansion which would otherwise be performed
(see below for a more detailed description of that). < code > -t< / code > attempts to
set the modification time of the local file to that of the remote file:
see the description of the function < code > zfrtime< / code > below for more
information.< / p >
< p > < span id = "index-zfget" > < / span > < / p >
< p > < code > zfget< / code > [ < code > -Gtc< / code > ] < code > file1< / code > ...< / p >
< p > Retrieve all the listed files < code > file1< / code > ... one at a time from the remote
server. If a file contains a ‘ < code > /< / code > ’ , the full name is passed to the
remote server, but the file is stored locally under the name given by
the part after the final ‘ < code > /< / code > ’ . The option < code > -c< / code > (cat) forces all files
to be sent as a single stream to standard output; in this case the < code > -t< / code >
option has no effect.< / p >
< p > < span id = "index-zfuget" > < / span > < / p >
< p > < code > zfuget< / code > [ < code > -Gvst< / code > ] < code > file1< / code > ...< / p >
< p > As < code > zfget< / code > , but only retrieve files where the version on the remote
server is newer (has a later modification time), or where the local file
does not exist. If the remote file is older but the files have different
sizes, or if the sizes are the same but the remote file is newer, the
user will usually be queried. With the option < code > -s< / code > , the command runs
silently and will always retrieve the file in either of those two cases.
With the option < code > -v< / code > , the command prints more information about the
files while it is working out whether or not to transfer them.< / p >
< p > < span id = "index-zfcget" > < / span > < / p >
< p > < code > zfcget< / code > [ < code > -Gt< / code > ] < code > file1< / code > ...< / p >
< p > As < code > zfget< / code > , but if any of the local files exists, and is shorter than
the corresponding remote file, the command assumes that it is the result
of a partially completed transfer and attempts to transfer the rest of
the file. This is useful on a poor connection which keeps failing.< / p >
< p > Note that this requires a commonly implemented, but non-standard,
version of the FTP protocol, so is not guaranteed to work on all
servers.< / p >
< p > < span id = "index-zfgcp" > < / span > < / p >
< p > < code > zfgcp< / code > [ < code > -Gt< / code > ] < code > remote-file< / code > < code > local-file< / code > < / p >
< p > < code > zfgcp< / code > [ < code > -Gt< / code > ] < code > rfile1< / code > ... < code > ldir< / code > < / p >
< p > This retrieves files from the remote server with arguments behaving
similarly to the < code > cp< / code > command.< / p >
< p > In the first form, copy < code > remote-file< / code > from the server to the local file
< code > local-file< / code > .< / p >
< p > In the second form, copy all the remote files < code > rfile1< / code > ... into the
local directory < code > ldir< / code > retaining the same basenames. This assumes UNIX
directory semantics.< / p >
< hr / >
< p > < span id = "Sending-files" > < / span > < / p >
< h3 id = "2535-sending-files" > < a class = "header" href = "#2535-sending-files" > 25.3.5 Sending files< / a > < / h3 >
< p > < span id = "index-zfput" > < / span > < / p >
< p > < code > zfput< / code > [ < code > -r< / code > ] < code > file1< / code > ...< / p >
< p > Send all the < code > file1< / code > ... given separately to the remote server. If a
filename contains a ‘ < code > /< / code > ’ , the full filename is used locally to find the
file, but only the basename is used for the remote file name.< / p >
< p > With the option < code > -r< / code > , if any of the < code > files< / code > are directories they are
sent recursively with all their subdirectories, including files
beginning with ‘ < code > .< / code > ’ . This requires that the remote machine understand
UNIX file semantics, since ‘ < code > /< / code > ’ is used as a directory separator.< / p >
< p > < span id = "index-zfuput" > < / span > < / p >
< p > < code > zfuput< / code > [ < code > -vs< / code > ] < code > file1< / code > ...< / p >
< p > As < code > zfput< / code > , but only send files which are newer than their remote
equivalents, or if the remote file does not exist. The logic is the same
as for < code > zfuget< / code > , but reversed between local and remote files.< / p >
< p > < span id = "index-zfcput" > < / span > < / p >
< p > < code > zfcput< / code > < code > file1< / code > ...< / p >
< p > As < code > zfput< / code > , but if any remote file already exists and is shorter than
the local equivalent, assume it is the result of an incomplete transfer
and send the rest of the file to append to the existing part. As the FTP
append command is part of the standard set, this is in principle more
likely to work than < code > zfcget< / code > .< / p >
< p > < span id = "index-zfpcp" > < / span > < / p >
< p > < code > zfpcp< / code > < code > local-file< / code > < code > remote-file< / code > < / p >
< p > < code > zfpcp< / code > < code > lfile1< / code > ... < code > rdir< / code > < / p >
< p > This sends files to the remote server with arguments behaving similarly
to the < code > cp< / code > command.< / p >
< p > With two arguments, copy < code > local-file< / code > to the server as < code > remote-file< / code > .< / p >
< p > With more than two arguments, copy all the local files < code > lfile1< / code > ... into
the existing remote directory < code > rdir< / code > retaining the same basenames. This
assumes UNIX directory semantics.< / p >
< p > A problem arises if you attempt to use < code > zfpcp< / code > < code > lfile1< / code > < code > rdir< / code > , i.e. the
second form of copying but with two arguments, as the command has no
simple way of knowing if < code > rdir< / code > corresponds to a directory or a
filename. It attempts to resolve this in various ways. First, if the
< code > rdir< / code > argument is ‘ < code > .< / code > ’ or ‘ < code > ..< / code > ’ or ends in a slash, it is assumed to
be a directory. Secondly, if the operation of copying to a remote file
in the first form failed, and the remote server sends back the expected
failure code 553 and a reply including the string ‘ < code > Is a directory< / code > ’ ,
then < code > zfpcp< / code > will retry using the second form.< / p >
< hr / >
< p > < span id = "Closing-the-connection" > < / span > < / p >
< h3 id = "2536-closing-the-connection" > < a class = "header" href = "#2536-closing-the-connection" > 25.3.6 Closing the connection< / a > < / h3 >
< p > < span id = "index-zfclose" > < / span > < / p >
< p > < code > zfclose< / code > < / p >
< p > Close the connection.< / p >
< hr / >
< p > < span id = "Session-management" > < / span > < / p >
< h3 id = "2537-session-management" > < a class = "header" href = "#2537-session-management" > 25.3.7 Session management< / a > < / h3 >
< p > < span id = "index-zfsession" > < / span > < / p >
< p > < code > zfsession< / code > [ < code > -lvod< / code > ] [ < code > sessname< / code > ]< / p >
< p > Allows you to manage multiple FTP sessions at once. By default,
connections take place in a session called ‘ < code > default< / code > ’ ; by giving the
command ‘ < code > zfsession< / code > < code > sessname< / code > ’ you can change to a new or existing
session with a name of your choice. The new session remembers its own
connection, as well as associated shell parameters, and also the
host/user parameters set by < code > zfparams< / code > . Hence you can have different
sessions set up to connect to different hosts, each remembering the
appropriate host, user and password.< / p >
< p > With no arguments, < code > zfsession< / code > prints the name of the current session;
with the option < code > -l< / code > it lists all sessions which currently exist, and
with the option < code > -v< / code > it gives a verbose list showing the host and
directory for each session, where the current session is marked with an
asterisk. With < code > -o< / code > , it will switch to the most recent previous session.< / p >
< p > With < code > -d< / code > , the given session (or else the current one) is removed;
everything to do with it is completely forgotten. If it was the only
session, a new session called ‘ < code > default< / code > ’ is created and made current.
It is safest not to delete sessions while background commands using
< code > zftp< / code > are active.< / p >
< p > < span id = "index-zftransfer" > < / span > < / p >
< p > < code > zftransfer< / code > < code > sess1``:``file1< / code > < code > sess2``:``file2< / code > < / p >
< p > Transfer files between two sessions; no local copy is made. The file is
read from the session < code > sess1< / code > as < code > file1< / code > and written to session < code > sess2< / code >
as file < code > file2< / code > ; < code > file1< / code > and < code > file2< / code > may be relative to the current
directories of the session. Either < code > sess1< / code > or < code > sess2< / code > may be omitted
(though the colon should be retained if there is a possibility of a
colon appearing in the file name) and defaults to the current session;
< code > file2< / code > may be omitted or may end with a slash, in which case the
basename of < code > file1< / code > will be added. The sessions < code > sess1< / code > and < code > sess2< / code > must
be distinct.< / p >
< p > The operation is performed using pipes, so it is required that the
connections still be valid in a subshell, which is not the case under
versions of some operating systems, presumably due to a system bug.< / p >
< hr / >
< p > < span id = "Bookmarks" > < / span > < / p >
< h3 id = "2538-bookmarks" > < a class = "header" href = "#2538-bookmarks" > 25.3.8 Bookmarks< / a > < / h3 >
< p > The two functions < code > zfmark< / code > and < code > zfgoto< / code > allow you to ‘ bookmark’ the
present location (host, user and directory) of the current FTP
connection for later use. The file to be used for storing and retrieving
bookmarks is given by the parameter < code > $ZFTP_BMFILE< / code > ; if not set when one
of the two functions is called, it will be set to the file < code > .zfbkmarks< / code >
in the directory where your zsh startup files live (usually < code > ~< / code > ).< / p >
< p > < span id = "index-zfmark" > < / span > < / p >
< p > < code > zfmark< / code > [ < code > bookmark< / code > ]< / p >
< p > If given an argument, mark the current host, user and directory under
the name < code > bookmark< / code > for later use by < code > zfgoto< / code > . If there is no connection
open, use the values for the last connection immediately before it was
closed; it is an error if there was none. Any existing bookmark under
the same name will be silently replaced.< / p >
< p > If not given an argument, list the existing bookmarks and the points to
which they refer in the form < code > user``@``host``:``directory< / code > ; this is the
format in which they are stored, and the file may be edited directly.< / p >
< p > < span id = "index-zfgoto" > < / span > < / p >
< p > < code > zfgoto< / code > [ < code > -n< / code > ] < code > bookmark< / code > < / p >
< p > Return to the location given by < code > bookmark< / code > , as previously set by
< code > zfmark< / code > . If the location has user ‘ < code > ftp< / code > ’ or ‘ < code > anonymous< / code > ’ , open the
connection with < code > zfanon< / code > , so that no password is required. If the user
and host parameters match those stored for the current session, if any,
those will be used, and again no password is required. Otherwise a
password will be prompted for.< / p >
< p > With the option < code > -n< / code > , the bookmark is taken to be a nickname stored by
the < code > ncftp< / code > program in its bookmark file, which is assumed to be
< code > ~/.ncftp/bookmarks< / code > . The function works identically in other ways. Note
that there is no mechanism for adding or modifying < code > ncftp< / code > bookmarks
from the zftp functions.< / p >
< hr / >
< p > < span id = "Other-functions" > < / span > < / p >
< h3 id = "2539-other-functions" > < a class = "header" href = "#2539-other-functions" > 25.3.9 Other functions< / a > < / h3 >
< p > Mostly, these functions will not be called directly (apart from
< code > zfinit< / code > ), but are described here for completeness. You may wish to
alter < code > zftp_chpwd< / code > and < code > zftp_progress< / code > , in particular.< / p >
< p > < span id = "index-zfinit" > < / span > < / p >
< p > < code > zfinit< / code > [ < code > -n< / code > ]< / p >
< p > As described above, this is used to initialize the zftp function system.
The < code > -n< / code > option should be used if the zftp command is already built into
the shell.< / p >
< p > < span id = "index-zfautocheck" > < / span > < / p >
< p > < code > zfautocheck< / code > [ < code > -dn< / code > ]< / p >
< p > This function is called to implement automatic reopening behaviour, as
described in more detail below. The options must appear in the first
argument; < code > -n< / code > prevents the command from changing to the old directory,
while < code > -d< / code > prevents it from setting the variable < code > do_close< / code > , which it
otherwise does as a flag for automatically closing the connection after
a transfer. The host and directory for the last session are stored in
the variable < code > $zflastsession< / code > , but the internal host/user/password
parameters must also be correctly set.< / p >
< p > < span id = "index-zfcd_005fmatch" > < / span > < / p >
< p > < code > zfcd_match prefix suffix< / code > < / p >
< p > This performs matching for completion of remote directory names. If the
remote server is UNIX, it will attempt to persuade the server to list
the remote directory with subdirectories marked, which usually works but
is not guaranteed. On other hosts it simply calls < code > zfget_match< / code > and
hence completes all files, not just directories. On some systems,
directories may not even look like filenames.< / p >
< p > < span id = "index-zfget_005fmatch" > < / span > < / p >
< p > < code > zfget_match prefix suffix< / code > < / p >
< p > This performs matching for completion of remote filenames. It caches
files for the current directory (only) in the shell parameter
< code > $zftp_fcache< / code > . It is in the form to be called by the < code > -K< / code > option of
< code > compctl< / code > , but also works when called from a widget-style completion
function with < code > prefix< / code > and < code > suffix< / code > set appropriately.< / p >
< p > < span id = "index-zfrglob" > < / span > < / p >
< p > < code > zfrglob varname< / code > < / p >
< p > Perform remote globbing, as describes in more detail below. < code > varname< / code > is
the name of a variable containing the pattern to be expanded; if there
were any matches, the same variable will be set to the expanded set of
filenames on return.< / p >
< p > < span id = "index-zfrtime" > < / span > < / p >
< p > < code > zfrtime< / code > < code > lfile< / code > < code > rfile< / code > [ < code > time< / code > ]< / p >
< p > Set the local file < code > lfile< / code > to have the same modification time as the
remote file < code > rfile< / code > , or the explicit time < code > time< / code > in FTP format
< code > CCYYMMDDhhmmSS< / code > for the GMT timezone. This uses the shell’ s
< code > zsh/datetime< / code > module to perform the conversion from GMT to local time.< / p >
< p > < span id = "index-zftp_005fchpwd_002c-supplied-version" > < / span > < / p >
< p > < code > zftp_chpwd< / code > < / p >
< p > This function is called every time a connection is opened, or closed, or
the remote directory changes. This version alters the title bar of an
< code > xterm< / code > -compatible or < code > sun-cmd< / code > terminal emulator to reflect the local
and remote hostnames and current directories. It works best when
combined with the function < code > chpwd< / code > . In particular, a function of the
form< / p >
< div class = "example" >
< pre > < code class = "language-example" > chpwd() {
if [[ -n $ZFTP_USER ]]; then
zftp_chpwd
else
# usual chpwd e.g put host:directory in title bar
fi
}
< / code > < / pre >
< / div >
< p > fits in well.< / p >
< p > < span id = "index-zftp_005fprogress_002c-supplied-version" > < / span > < / p >
< p > < code > zftp_progress< / code > < / p >
< p > This function shows the status of the transfer. It will not write
anything unless the output is going to a terminal; however, if you
transfer files in the background, you should turn off progress reports
by hand using ‘ < code > zstyle ’ :zftp:*’ progress none< / code > ’ . Note also that if you
alter it, any output < em > must< / em > be to standard error, as standard output may
be a file being received. The form of the progress meter, or whether it
is used at all, can be configured without altering the function, as
described in the next section.< / p >
< p > < span id = "index-zffcache" > < / span > < / p >
< p > < code > zffcache< / code > < / p >
< p > This is used to implement caching of files in the current directory for
each session separately. It is used by < code > zfget_match< / code > and < code > zfrglob< / code > .< / p >
< hr / >
< p > < span id = "Miscellaneous-Features" > < / span >
< span id = "Miscellaneous-Features-1" > < / span > < / p >
< h2 id = "254-miscellaneous-features" > < a class = "header" href = "#254-miscellaneous-features" > 25.4 Miscellaneous Features< / a > < / h2 >
< hr / >
< p > < span id = "Configuration-3" > < / span > < / p >
< h3 id = "2541-configuration" > < a class = "header" href = "#2541-configuration" > 25.4.1 Configuration< / a > < / h3 >
< p > < span id = "index-zftp-function-system_002c-configuration" > < / span >
< span id = "index-zftp-function-system_002c-styles" > < / span >
< span id = "index-styles-in-zftp-functions" > < / span > < / p >
< p > Various styles are available using the standard shell style mechanism,
described in < a href = "Zsh-Modules.html#The-zsh_002fzutil-Module" > The zsh/zutil
Module< / a > . Briefly, the command
‘ < code > zstyle ’ :zftp:*’ < / code > < code > style< / code > < code > value< / code > ...’ . defines the < code > style< / code > to have
value < code > value< / code > ; more than one value may be given, although that is not
useful in the cases described here. These values will then be used
throughout the zftp function system. For more precise control, the first
argument, which gives a context in which the style applies, can be
modified to include a particular function, as for example
‘ < code > :zftp:zfget< / code > ’ : the style will then have the given value only in
the < code > zfget< / code > function. Values for the same style in different contexts
may be set; the most specific function will be used, where strings are
held to be more specific than patterns, and longer patterns and shorter
patterns. Note that only the top level function name, as called by the
user, is used; calling of lower level functions is transparent to the
user. Hence modifications to the title bar in < code > zftp_chpwd< / code > use the
contexts < code > :zftp:zfopen< / code > , < code > :zftp:zfcd< / code > , etc., depending where it was
called from. The following styles are understood:< / p >
< p > < span id = "index-progress_002c-zftp-style" > < / span > < / p >
< p > < code > progress< / code > < / p >
< p > Controls the way that < code > zftp_progress< / code > reports on the progress of a
transfer. If empty, unset, or ‘ < code > none< / code > ’ , no progress report is made; if
‘ < code > bar< / code > ’ a growing bar of inverse video is shown; if ‘ < code > percent< / code > ’ (or
any other string, though this may change in future), the percentage of
the file transferred is shown. The bar meter requires that the width of
the terminal be available via the < code > $COLUMNS< / code > parameter (normally this is
set automatically). If the size of the file being transferred is not
available, < code > bar< / code > and < code > percent< / code > meters will simply show the number of
bytes transferred so far.< / p >
< p > When < code > zfinit< / code > is run, if this style is not defined for the context
< code > :zftp:*< / code > , it will be set to ‘ bar’ .< / p >
< p > < span id = "index-update_002c-zftp-style" > < / span > < / p >
< p > < code > update< / code > < / p >
< p > Specifies the minimum time interval between updates of the progress
meter in seconds. No update is made unless new data has been received,
so the actual time interval is limited only by < code > $ZFTP_TIMEOUT< / code > .< / p >
< p > As described for < code > progress< / code > , < code > zfinit< / code > will force this to default to 1.< / p >
< p > < span id = "index-remote_002dglob_002c-zftp-style" > < / span > < / p >
< p > < code > remote-glob< / code > < / p >
< p > If set to ‘ < code > 1< / code > ’ , ‘ < code > yes< / code > ’ or ‘ < code > true< / code > ’ , filename generation (globbing) is
performed on the remote machine instead of by zsh itself; see below.< / p >
< p > < span id = "index-titlebar_002c-zftp-style" > < / span > < / p >
< p > < code > titlebar< / code > < / p >
< p > If set to ‘ < code > 1< / code > ’ , ‘ < code > yes< / code > ’ or ‘ < code > true< / code > ’ , < code > zftp_chpwd< / code > will put the remote
host and remote directory into the titlebar of terminal emulators such
as xterm or sun-cmd that allow this.< / p >
< p > As described for < code > progress< / code > , < code > zfinit< / code > will force this to default to 1.< / p >
< p > < span id = "index-chpwd_002c-zftp-style" > < / span > < / p >
< p > < code > chpwd< / code > < / p >
< p > If set to ‘ < code > 1< / code > ’ ‘ < code > yes< / code > ’ or ‘ < code > true< / code > ’ , < code > zftp_chpwd< / code > will call the function
< code > chpwd< / code > when a connection is closed. This is useful if the remote host
details were put into the terminal title bar by < code > zftp_chpwd< / code > and your
usual < code > chpwd< / code > also modifies the title bar.< / p >
< p > When < code > zfinit< / code > is run, it will determine whether < code > chpwd< / code > exists and if so
it will set the default value for the style to 1 if none exists already.< / p >
< p > Note that there is also an associative array < code > zfconfig< / code > which contains
values used by the function system. This should not be modified or
overwritten.< / p >
< hr / >
< p > < span id = "Remote-globbing" > < / span > < / p >
< h3 id = "2542-remote-globbing" > < a class = "header" href = "#2542-remote-globbing" > 25.4.2 Remote globbing< / a > < / h3 >
< p > < span id = "index-zftp-function-system_002c-remote-globbing" > < / span > < / p >
< p > The commands for retrieving files usually perform filename generation
(globbing) on their arguments; this can be turned off by passing the
option < code > -G< / code > to each of the commands. Normally this operates by
retrieving a complete list of files for the directory in question, then
matching these locally against the pattern supplied. This has the
advantage that the full range of zsh patterns (respecting the setting of
the option < code > EXTENDED_GLOB< / code > ) can be used. However, it means that the
directory part of a filename will not be expanded and must be given
exactly. If the remote server does not support the UNIX directory
semantics, directory handling is problematic and it is recommended that
globbing only be used within the current directory. The list of files in
the current directory, if retrieved, will be cached, so that subsequent
globs in the same directory without an intervening < code > zfcd< / code > are much
faster.< / p >
< p > If the < code > remote-glob< / code > style (see above) is set, globbing is instead
performed on the remote host: the server is asked for a list of matching
files. This is highly dependent on how the server is implemented, though
typically UNIX servers will provide support for basic glob patterns.
This may in some cases be faster, as it avoids retrieving the entire
list of directory contents.< / p >
< hr / >
< p > < span id = "Automatic-and-temporary-reopening" > < / span > < / p >
< h3 id = "2543-automatic-and-temporary-reopening" > < a class = "header" href = "#2543-automatic-and-temporary-reopening" > 25.4.3 Automatic and temporary reopening< / a > < / h3 >
< p > < span id = "index-zftp-function-system_002c-automatic-reopening" > < / span > < / p >
< p > As described for the < code > zfopen< / code > command, a subsequent < code > zfopen< / code > with no
parameters will reopen the connection to the last host (this includes
connections made with the < code > zfanon< / code > command). Opened in this fashion, the
connection starts in the default remote directory and will remain open
until explicitly closed.< / p >
< p > Automatic re-opening is also available. If a connection is not currently
open and a command requiring a connection is given, the last connection
is implicitly reopened. In this case the directory which was current
when the connection was closed again becomes the current directory
(unless, of course, the command given changes it). Automatic reopening
will also take place if the connection was close by the remote server
for whatever reason (e.g. a timeout). It is not available if the < code > -1< / code >
option to < code > zfopen< / code > or < code > zfanon< / code > was used.< / p >
< p > Furthermore, if the command issued is a file transfer, the connection
will be closed after the transfer is finished, hence providing a
one-shot mode for transfers. This does not apply to directory changing
or listing commands; for example a < code > zfdir< / code > may reopen a connection but
will leave it open. Also, automatic closure will only ever happen in the
same command as automatic opening, i.e a < code > zfdir< / code > directly followed by a
< code > zfget< / code > will never close the connection automatically.< / p >
< p > Information about the previous connection is given by the < code > zfstat< / code >
function. So, for example, if that reports:< / p >
< div class = "example" >
< pre > < code class = "language-example" > Session: default
Not connected.
Last session: ftp.bar.com:/pub/textfiles
< / code > < / pre >
< / div >
< p > then the command < code > zfget file.txt< / code > will attempt to reopen a connection to
< code > ftp.bar.com< / code > , retrieve the file < code > /pub/textfiles/file.txt< / code > , and
immediately close the connection again. On the other hand, < code > zfcd ..< / code >
will open the connection in the directory < code > /pub< / code > and leave it open.< / p >
< p > Note that all the above is local to each session; if you return to a
previous session, the connection for that session is the one which will
be reopened.< / p >
< hr / >
< p > < span id = "Completion-3" > < / span > < / p >
< h3 id = "2544-completion" > < a class = "header" href = "#2544-completion" > 25.4.4 Completion< / a > < / h3 >
< p > Completion of local and remote files, directories, sessions and
bookmarks is supported. The older, < code > compctl< / code > -style completion is defined
when < code > zfinit< / code > is called; support for the new widget-based completion
system is provided in the function < code > Completion/Zsh/Command/_zftp< / code > , which
should be installed with the other functions of the completion system
and hence should automatically be available.< / p >
< hr / >
< p > This document was generated on < em > February 15, 2020< / em > using
< a href = "http://www.nongnu.org/texi2html/" > < em > texi2html 5.0< / em > < / a > .< br / >
Zsh version 5.8, released on February 14, 2020.< / p >
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