mirror of
https://github.com/flokoe/bash-hackers-wiki.git
synced 2024-11-25 07:43:42 +01:00
Fix "relative links target not found" warnings
This commit is contained in:
flokoe
parent
9b7adabbaf
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45b56ae6c6
@ -138,7 +138,7 @@ In the case of `eval` it isn't recommended to use this behavior,
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because unlike e.g. [declare](../../commands/builtin/declare.md), the initial
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expansion is still subject to all expansions including
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[word-splitting](../../syntax/expansion/wordsplit.md) and [pathname
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expansion](../../syntax/expansion/glob.md).
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expansion](../../syntax/expansion/globs.md).
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$ ( set -x; touch 'x+=(\[[123]\]=*)' 'x+=([3]=yo)'; eval x+=(*); echo "${x[@]}" )
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+ touch 'x+=(\[[123]\]=*)' 'x+=([3]=yo)'
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@ -151,7 +151,7 @@ expansion](../../syntax/expansion/glob.md).
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Other commands known to be affected by compound assignment arguments
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include: [let](../../commands/builtin/let.md),
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[declare](../../commands/builtin/declare.md),
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[typeset](../../commands/builtin/typeset.md), [local](../../commands/builtin/local.md),
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`typeset`, [local](../../commands/builtin/local.md),
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[export](../../commands/builtin/export.md), and
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[readonly](../../commands/builtin/readonly.md). More oddities below show both
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similarities and differences to commands like
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@ -43,4 +43,4 @@ executed the `exit` command, because the shell exits.
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## See also
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- [The trap builtin command](../../commands/builtin/trap.md)
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- [The exit status](../../dict/terms/exit_status.md)
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- [The exit status](../../dict/exit_status.md)
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@ -32,4 +32,4 @@ comes back, there was a problem in doing the return.
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## See also
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- [The exit builtin command](../../commands/builtin/exit.md)
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- [The exit status](../../dict/terms/exit_status.md)
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- [The exit status](../../dict/exit_status.md)
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@ -62,7 +62,7 @@ There are no options.
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errors.`$ dash -c 'f() { if shift; then echo "$1"; else echo "no args"; fi; }; f'
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dash: 1: shift: can't shift that many
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` In most shells, you can work around this problem using the
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[command](../../commands/builtin/command.md) builtin to suppress fatal
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`command` builtin to suppress fatal
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errors caused by *special builtins*. <code> \$ dash -c \'f() { if
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command shift 2>/dev/null; then echo \"\$1\"; else echo \"no
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args\"; fi; }; f\'
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@ -1,7 +1,7 @@
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# Directory
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In terms of UNIX(r), a directory is a special file which contains a list
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of [hardlinks](../dict/terms/hardlink.md) to other files. These other files
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of [hardlinks](../dict/hardlink.md) to other files. These other files
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also can be directories of course, so it's possible to create a
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\"hierarchy of directories\" - the UNIX(r)-typical filesystem structure.
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@ -10,6 +10,6 @@ all other directory entries are **subdirectories** of it.
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## See also
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- [hardlink](../dict/terms/hardlink.md)
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- [file](../dict/terms/file.md)
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- [special file](../dict/terms/special_file.md)
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- [hardlink](../dict/hardlink.md)
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- [file](../dict/file.md)
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- [special file](../dict/special_file.md)
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@ -1,24 +1,22 @@
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# File
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A file is a pool of data in the [filesystem](../dict/terms/filesystem.md). On
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A file is a pool of data in the `filesystem`. On
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userlevel, it's referenced using a name, a
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[hardlink](../dict/terms/hardlink.md) to the file.
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[hardlink](hardlink.md) to the file.
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If a file is not referenced anymore (number of hardlinks to it drops to
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0) then the space allocated for that file is re-used, unless it's still
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1) then the space allocated for that file is re-used, unless it's still
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used by some process.
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The file-data splits into actual payload (file contents) and some
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metadata like filesize, filemode or timestamps. The metadata is stored
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in the [inode](../dict/terms/inode.md).
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in the `inode`.
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Strictly spoken, a [hardlink](../dict/terms/hardlink.md) (also called
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\"filename\") points to the [inode](../dict/terms/inode.md) which organizes a
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Strictly spoken, a [hardlink](hardlink.md) (also called
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\"filename\") points to the `inode` which organizes a
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file, not to the file itself.
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## See also
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- [filesystem](../dict/terms/filesystem.md)
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- [filetimes](../dict/terms/filetimes.md)
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- [hardlink](../dict/terms/hardlink.md)
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- [inode](../dict/terms/inode.md)
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- [filetimes](filetimes.md)
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- [hardlink](hardlink.md)
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@ -23,8 +23,8 @@ which serves the same purpose.
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## See also
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- [shell](../dict/terms/shell.md)
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- [hardlink](../dict/terms/hardlink.md)
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- [shell](../dict/shell.md)
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- [hardlink](../dict/hardlink.md)
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## See also (article)
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@ -4,16 +4,16 @@ Also the article for:
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- filename
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A hardlink associates a *filename* with a [file](../dict/terms/file.md). That
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A hardlink associates a *filename* with a [file](../dict/file.md). That
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name is an entry in a directory listing. Of course a file can have more
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hardlinks to it (usually the number of hardlinks to a file is limited),
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but all hardlinks to a file must reside on the same
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[filesystem](../dict/terms/filesystem.md) as the file itself!
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`filesystem` as the file itself!
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What you usually call a file is just a name for that file, and thus, a
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hardlink.
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The difference between a [symbolic link](../dict/terms/symlink.md) and a hard
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The difference between a [symbolic link](../dict/symlink.md) and a hard
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link is that there is no easy way to differentiate between a \'real\'
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file and a hard link, let's take a look at the example:
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@ -46,6 +46,5 @@ is freed when the last hard link pointing to it is deleted.
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## See also
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- [file](../dict/terms/file.md)
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- [filesystem](../dict/terms/filesystem.md)
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- [symlink](../dict/terms/symlink.md)
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- [file](../dict/file.md)
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- [symlink](../dict/symlink.md)
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@ -13,4 +13,4 @@ behaviour of the system shell and some utilities (commands).
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## See also
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- Dictionary, internal: [shell](../dict/terms/shell.md)
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- Dictionary, internal: [shell](../dict/shell.md)
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@ -14,6 +14,6 @@ too.
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## See also
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- [file](../dict/terms/file.md)
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- [filename](../dict/terms/hardlink.md)
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- [directory](../dict/terms/directory.md)
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- [file](../dict/file.md)
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- [filename](../dict/hardlink.md)
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- [directory](../dict/directory.md)
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@ -10,6 +10,5 @@ it can
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## See also
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- [hardlink](../dict/terms/hardlink.md)
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- [filesystem](../dict/terms/filesystem.md)
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- [directory](../dict/terms/directory.md)
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- [hardlink](../dict/hardlink.md)
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- [directory](../dict/directory.md)
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@ -93,7 +93,7 @@ left to parse, it's easy to use in a while-loop:
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parsing on the first non-option argument (a string that doesn't begin
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with a hyphen (`-`) that isn't an argument for any option in front of
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it). It will also stop parsing when it sees the `--` (double-hyphen),
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which means [end of options](../dict/terms/end_of_options.md).
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which means [end of options](../dict/end_of_options.md).
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### Used variables
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@ -92,7 +92,7 @@ atomic. Maybe a while loop checking continously for the existence of the
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lock in the background and sending a signal such as USR1, if the
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directory is not found, can be done. The signal would need to be
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trapped. I am sure there there is a better solution than this
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suggestion* --- *[sn18](sunny_delhi18@yahoo.com) 2009/12/19 08:24*
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suggestion* --- **sn18** 2009/12/19 08:24*
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**Note:** While perusing the Internet, I found some people asking if the
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`mkdir` method works \"on all filesystems\". Well, let's say it should.
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@ -663,7 +663,7 @@ recommendations:
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<!-- -->
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```
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- **Never** use the Csh `&>foo` and `>&foo` shorthand redirects. Use
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the long form `>foo 2>&1`. (see: [obsolete](../obsolete.md))
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the long form `>foo 2>&1`. (see: [obsolete](../scripting/obsolete.md))
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```{=html}
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<!-- -->
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@ -52,7 +52,7 @@ See also [some Bash source code excerpts](misc/readthesourceluke.md).
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## How to
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[Doing specific tasks: concepts, methods, ideas](howto/start.md):
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Doing specific tasks: concepts, methods, ideas:
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- [Simple locking (against parallel run.md)](howto/mutex.md)
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- [Rudimentary config files for your scripts](howto/conffile.md)
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@ -163,10 +163,10 @@ These are provided directly by the shell, rather than invoked as standalone exte
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| Command | Description | Alt | Type |
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| --------------------------------------------------- | ---------------------------------------------------- | -------- | --------------- |
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| [colon](commands/builtin/true.md) | "true" null command. | `true` | special builtin |
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| [dot](commands/builtin/source.md) | Source external files. | `source` | special builtin |
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| [false](commands/builtin/false.md) | Fail at doing nothing. | | builtin |
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| [continue / break](commands/builtin/continueBreak.md) | continue with or break out of loops. | | special builtin |
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| `colon` | "true" null command. | `true` | special builtin |
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| `.` (dot) | Source external files. | `source` | special builtin |
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| `false` | Fail at doing nothing. | | builtin |
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| `continue / break` | continue with or break out of loops. | | special builtin |
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| [let](commands/builtin/let.md) | Arithmetic evaluation simple command. | | builtin |
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| [return](commands/builtin/return.md) | Return from a function with a specified exit status. | | special builtin |
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| [[]](commands/classictest.md) | The classic `test` simple command. | `test` | builtin |
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@ -182,12 +182,13 @@ These are provided directly by the shell, rather than invoked as standalone exte
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| [exit](commands/builtin/exit.md) | Exit the shell. | | special builtin |
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| [trap](commands/builtin/trap.md) | Set signal handlers or output the current handlers. | | special builtin |
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| [kill](commands/builtin/kill.md) | Send a signal to specified process(es.md) | | builtin |
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| [times](commands/builtin/times.md) | Display process times. | | special builtin |
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|`times` | Display process times. | | special builtin |
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| [wait](commands/builtin/wait.md) | Wait for background jobs and asynchronous lists. | | builtin |
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## Dictionary
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A list of expressions, words, and their meanings is [here](dict/index.md).
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A list of expressions, words, and their meanings can be found under the *Dict*
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tab.
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## Links
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@ -252,7 +253,7 @@ Visit us in [ircs://irc.libera.chat:6697](ircs://irc.libera.chat:6697), channel
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If you have critiques or suggestions, please feel free to send a mail using the contact form on the right.
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Note that there is a simple discussion option below every article.
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Please also see the [imprint](user/thebonsai/imprint.md) if you have problems with the site and its contents (legality, ...)!
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Please also see the imprint if you have problems with the site and its contents (legality, ...)!
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It also would be nice to drop a line when
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@ -34,7 +34,7 @@ Option-switch parsing (e.g. `-h` for displaying help) is not performed
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at this point.
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See also [the dictionary entry for
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\"parameter\"](../dict/terms/parameter.md).
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\"parameter\"](../dict/parameter.md).
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## The first argument
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@ -403,4 +403,4 @@ There is a [small tutorial dedicated to
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- Internal: [Substring expansion on a
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parameter](../syntax/pe.md#substring_expansion) (for equivalent syntax
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for mass-expansion)
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- Dictionary, internal: [parameter](../dict/terms/parameter.md)
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- Dictionary, internal: [parameter](../dict/parameter.md)
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@ -278,8 +278,8 @@ The basic structure of a script simply reads:
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### The shebang
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If possible (I know it's not always possible!), use [a
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shebang](../dict/terms/shebang.md).
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If possible (I know it's not always possible!), use a
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[shebang](../dict/interpreter_directive.md).
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Be careful with `/bin/sh`: The argument that \"on Linux `/bin/sh` is
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Bash\" **is a lie** (and technically irrelevant)
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@ -358,7 +358,7 @@ Example:
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### Exit meaningfully
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The [exit code](../dict/terms/exit_status.md) is your only way to directly
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The [exit code](../dict/exit_status.md) is your only way to directly
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communicate with the calling process without any special provisions.
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If your script exits, provide a meaningful exit code. That minimally
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@ -119,7 +119,7 @@ syntax:
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FIXME Missing an additional article about list operators
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A list is a sequence of one or more [pipelines](../basicgrammar.md#pipelines)
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A list is a sequence of one or more [pipelines](#pipelines)
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separated by one of the operators `;`, `&`, `&&`, or `││`, and
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optionally terminated by one of `;`, `&`, or `<newline>`.
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@ -176,7 +176,7 @@ overview):
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FIXME Missing an additional article about shell functions
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A shell function definition makes a [compound
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command](../basicgrammar.md#compound_commands) available via a new name. When
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command](#compound_commands) available via a new name. When
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the function runs, it has its own \"private\" set of positional
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parameters and I/O descriptors. It acts like a script-within-the-script.
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Simply stated: **You\'ve created a new command.**
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@ -191,7 +191,7 @@ looks like:
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print_help() { echo "Sorry, no help available"; }
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As above, a function definition can have any [compound
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command](../basicgrammar.md#compound_commands) as a body. Structures like
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command](#compound_commands) as a body. Structures like
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countme() for ((x=1;x<=9;x++)); do echo $x; done
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@ -273,17 +273,17 @@ Weird function names should not be used. Quote from the maintainer:
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## Grammar summary
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- a [simple command](../basicgrammar.md#simple_commands) is just a command
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- a [simple command](#simple_commands) is just a command
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and its arguments
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- a [pipeline](../basicgrammar.md#pipelines) is one or more [simple
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command](../basicgrammar.md#simple_commands) probably connected in a pipe
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- a [list](../basicgrammar.md#lists) is one or more
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[pipelines](../basicgrammar.md#pipelines) connected by special operators
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- a [compound command](../basicgrammar.md#compound_commands) is a
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[list](../basicgrammar.md#lists) or a special command that forms a new
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- a [pipeline](#pipelines) is one or more [simple
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command](#simple_commands) probably connected in a pipe
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- a [list](#lists) is one or more
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[pipelines](#pipelines) connected by special operators
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- a [compound command](#compound_commands) is a
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[list](#lists) or a special command that forms a new
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meta-command
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- a [function definition](../basicgrammar.md#shell_function_definitions)
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makes a [compound command](../basicgrammar.md#compound_commands) available
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- a [function definition](#shell_function_definitions)
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makes a [compound command](#compound_commands) available
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under a new name, and a separate environment
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## Examples for classification
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@ -312,12 +312,12 @@ FIXME more\...
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cp mymusic.mp3 /data/mp3
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fi
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- the [compound command](../basicgrammar.md#compound_commands) for the `if`
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- the [compound command](#compound_commands) for the `if`
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clause
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- the [list](../basicgrammar.md#lists) that `if` **checks** actually
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contains the [simple command](../basicgrammar.md#simple_commands)
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- the [list](#lists) that `if` **checks** actually
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contains the [simple command](#simple_commands)
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`[ -d /data/mp3 ]`
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- the [list](../basicgrammar.md#lists) that `if` **executes** contains a
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- the [list](#lists) that `if` **executes** contains a
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simple command (`cp mymusic.mp3 /data/mp3`)
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Let's invert test command exit code, only one thing changes:
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@ -326,8 +326,8 @@ Let's invert test command exit code, only one thing changes:
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cp mymusic.mp3 /data/mp3
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fi
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- the [list](../basicgrammar.md#lists) that `if` **checks** contains a
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[pipeline](../basicgrammar.md#pipelines) now (because of the `!`)
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- the [list](#lists) that `if` **checks** contains a
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[pipeline](#pipelines) now (because of the `!`)
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## See also
|
||||
|
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@ -51,11 +51,11 @@ behaves as if it would be 1 (**TRUE** in arithmetic context).
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:!: Like all loops (Both types of `for`-loop, `while` and `until`), this
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loop can be:
|
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- Terminated (broken) by the [break](../../commands/builtin/continuebreak.md)
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- Terminated (broken) by the `break`
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builtin, optionally as `break N` to break out of `N` levels of
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nested loops.
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- Forced immediately to the next iteration using the
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[continue](../../commands/builtin/continuebreak.md) builtin, optionally as
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`continue` builtin, optionally as
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the `continue N` analog to `break N`.
|
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The equivalent construct using a [while loop](../../syntax/ccmd/while_loop.md)
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@ -70,7 +70,7 @@ command](../../syntax/ccmd/arithmetic_eval.md) would be structured as:
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The equivalent `while` construct isn't exactly the same, because both,
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the `for` and the `while` loop behave differently in case you use the
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[continue](../../commands/builtin/continuebreak.md) command.
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`continue` command.
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### Alternate syntax
|
||||
|
||||
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@ -8,8 +8,8 @@ them. That is what the essential \"Bash language\" is made of.
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||||
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||||
## Command grouping
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||||
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||||
- grouping: [command grouping](../../grouping_plain.md)
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- grouping again: [command grouping in a subshell](../../grouping_subshell.md)
|
||||
- grouping: [command grouping](grouping_plain.md)
|
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- grouping again: [command grouping in a subshell](grouping_subshell.md)
|
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## Conditional reactions
|
||||
|
||||
@ -18,18 +18,18 @@ Note that conditionals can also be scripted using
|
||||
commands.
|
||||
|
||||
- the \"new\" test command: [conditional
|
||||
expression](../../conditional_expression.md)
|
||||
- if-clause: [conditional branching](../../if_clause.md)
|
||||
- case statement: [pattern-based branching](../../case.md)
|
||||
expression](conditional_expression.md)
|
||||
- if-clause: [conditional branching](if_clause.md)
|
||||
- case statement: [pattern-based branching](case.md)
|
||||
|
||||
## Loops
|
||||
|
||||
- [classic for-loop](../../classic_for.md)
|
||||
- [C-style for-loop](../../c_for.md)
|
||||
- [while loop](../../while_loop.md)
|
||||
- [until loop](../../until_loop.md)
|
||||
- [classic for-loop](classic_for.md)
|
||||
- [C-style for-loop](c_for.md)
|
||||
- [while loop](while_loop.md)
|
||||
- [until loop](until_loop.md)
|
||||
|
||||
## Misc
|
||||
|
||||
- math: [arithmetic evaluation](../../arithmetic_eval.md)
|
||||
- menus: [user selections](../../user_select.md)
|
||||
- math: [arithmetic evaluation](arithmetic_eval.md)
|
||||
- menus: [user selections](user_select.md)
|
||||
|
||||
@ -170,7 +170,7 @@ See the above section on [#scope](#scope)
|
||||
not (yet) pdksh derivatives (mksh). Coprocesses may be used instead.
|
||||
- Process substitution is supported only on systems that support
|
||||
either named pipes (FIFO - a [special
|
||||
file](../../dict/terms/special_file.md)) or the `/dev/fd/*` method for
|
||||
file](../../dict/special_file.md)) or the `/dev/fd/*` method for
|
||||
accessing open files. If the system doesn't support `/dev/fd/*`,
|
||||
Bash falls back to creating named pipes. Note that not all shells
|
||||
that support process substitution have that fallback.
|
||||
|
||||
@ -46,7 +46,7 @@ applicable description mentions arrays below. Please also see the
|
||||
[article about arrays](../syntax/arrays.md).
|
||||
|
||||
For a more technical view what a parameter is and which types exist,
|
||||
[see the dictionary entry for \"parameter\"](../dict/terms/parameter.md).
|
||||
[see the dictionary entry for \"parameter\"](../dict/parameter.md).
|
||||
|
||||
## Overview
|
||||
|
||||
@ -1071,4 +1071,4 @@ the difference may introduce a possible compatibility problem.
|
||||
- Internal: [Introduction to expansion and
|
||||
substitution](../syntax/expansion/intro.md)
|
||||
- Internal: [Arrays](../syntax/arrays.md)
|
||||
- Dictionary, internal: [parameter](../dict/terms/parameter.md)
|
||||
- Dictionary, internal: [parameter](../dict/parameter.md)
|
||||
|
||||
@ -88,8 +88,8 @@ list of aliases as maintained by the alias builtin. Elements added to
|
||||
this array appear in the alias list; unsetting array elements cause
|
||||
aliases to be removed from the alias list.
|
||||
|
||||
The associative key is the name of the alias as used with the [alias
|
||||
builtin command](../commands/builtin/alias.md).
|
||||
The associative key is the name of the alias as used with the `alias`
|
||||
builtin command.
|
||||
|
||||
### BASH_ARGC
|
||||
|
||||
@ -102,8 +102,8 @@ An array variable whose values are the number of parameters in each
|
||||
frame of the current Bash execution call stack.
|
||||
|
||||
The number of parameters to the current subroutine (shell function or
|
||||
script executed with [`.` or `source` builtin
|
||||
command](../commands/builtin/source.md)) is at the top of the stack. When a
|
||||
script executed with `.` or `source` builtin
|
||||
command) is at the top of the stack. When a
|
||||
subroutine is executed, the number of parameters passed is pushed onto
|
||||
`BASH_ARGC`.
|
||||
|
||||
@ -144,13 +144,13 @@ subsequently reset.
|
||||
Set by Bash: yes Default: n/a
|
||||
|
||||
An associative array variable whose members correspond to the internal
|
||||
hash table of commands as maintained by the [hash builtin
|
||||
command](../commands/builtin/hash.md). Elements added to this array appear in
|
||||
hash table of commands as maintained by the `hash` builtin
|
||||
command. Elements added to this array appear in
|
||||
the hash table; unsetting array elements cause commands to be removed
|
||||
from the hash table.
|
||||
|
||||
The associative key is the name of the command as used with the[hash
|
||||
builtin command](../commands/builtin/hash.md).
|
||||
The associative key is the name of the command as used with the `hash`
|
||||
builtin command.
|
||||
|
||||
### BASH_COMMAND
|
||||
|
||||
@ -573,8 +573,8 @@ The previous working directory as set by the cd command.
|
||||
Type: normal variable Read-only: no
|
||||
Set by Bash: yes Default: n/a
|
||||
|
||||
The value of the last option argument processed by the [getopts builtin
|
||||
command](../commands/builtin/getopts.md).
|
||||
The value of the last option argument processed by the `getopts` builtin
|
||||
command.
|
||||
|
||||
### OPTIND
|
||||
|
||||
@ -583,8 +583,8 @@ command](../commands/builtin/getopts.md).
|
||||
Type: integer variable Read-only: no
|
||||
Set by Bash: yes Default: n/a
|
||||
|
||||
The index of the next argument to be processed by the [getopts builtin
|
||||
command](../commands/builtin/getopts.md).
|
||||
The index of the next argument to be processed by the `getopts` builtin
|
||||
command.
|
||||
|
||||
### OSTYPE
|
||||
|
||||
@ -828,7 +828,7 @@ Similar to `BASH_ENV`: Used when the shell is invoked in POSIX(r) mode.
|
||||
Type: normal variable Read-only: no
|
||||
Set by Bash: no Default: n/a
|
||||
|
||||
The default editor for the [fc builtin command](../commands/builtin/fc.md).
|
||||
The default editor for the `fc` builtin command.
|
||||
|
||||
### FIGNORE
|
||||
|
||||
@ -1177,7 +1177,7 @@ Example content:
|
||||
Set by Bash: yes Default: 1 (set on startup)
|
||||
|
||||
If set to the value 1, Bash displays error messages generated by the
|
||||
[getopts builtin command](../commands/builtin/getopts.md).
|
||||
`getopts` builtin command.
|
||||
|
||||
`OPTERR` is initialized to 1 each time the shell is invoked or a shell
|
||||
script is executed.
|
||||
@ -1370,7 +1370,7 @@ A trailing newline is added when the format string is displayed.
|
||||
If set to a value greater than zero, `TMOUT` is treated as the default
|
||||
timeout for the [read builtin command](../commands/builtin/read.md).
|
||||
|
||||
The [select command](../commands/builtin/select.md) terminates if input does
|
||||
The `select` command terminates if input does
|
||||
not arrive after `TMOUT` seconds when input is coming from a terminal.
|
||||
|
||||
In an interactive shell, the value is interpreted as the number of
|
||||
|
||||
Loading…
Reference in New Issue
Block a user