mirror of
https://github.com/rawiriblundell/wiki.bash-hackers.org
synced 2024-12-25 06:00:41 +01:00
66 lines
2.5 KiB
Plaintext
66 lines
2.5 KiB
Plaintext
Comments extracted from the bash source and therefore Copyright (C) 1987-2004 Free Software Foundation, Inc. under
|
|
the terms of the GNU General Public License etc..
|
|
|
|
from ''mailcheck.c'':
|
|
<code C>
|
|
/* check_mail () is useful for more than just checking mail. Since it has
|
|
the paranoids dream ability of telling you when someone has read your
|
|
mail, it can just as easily be used to tell you when someones .profile
|
|
file has been read, thus letting one know when someone else has logged
|
|
in. Pretty good, huh? */
|
|
</code>
|
|
|
|
From ''builtins/read.def'':
|
|
|
|
<code C>
|
|
/* If there are no variables, save the text of the line read to the
|
|
variable $REPLY. ksh93 strips leading and trailing IFS whitespace,
|
|
so that `read x ; echo "$x"' and `read ; echo "$REPLY"' behave the
|
|
same way, but I believe that the difference in behaviors is useful
|
|
enough to not do it. Without the bash behavior, there is no way
|
|
to read a line completely without interpretation or modification
|
|
unless you mess with $IFS (e.g., setting it to the empty string).
|
|
If you disagree, change the occurrences of `#if 0' to `#if 1' below. */
|
|
</code>
|
|
|
|
from ''variables.c'':
|
|
<code C>
|
|
/*
|
|
* 24 October 2001
|
|
*
|
|
* I'm tired of the arguing and bug reports. Bash now leaves SSH_CLIENT
|
|
* and SSH2_CLIENT alone. I'm going to rely on the shell_level check in
|
|
* isnetconn() to avoid running the startup files more often than wanted.
|
|
* That will, of course, only work if the user's login shell is bash, so
|
|
* I've made that behavior conditional on SSH_SOURCE_BASHRC being defined
|
|
* in config-top.h.
|
|
*/
|
|
</code>
|
|
|
|
From ''shell.h'':
|
|
<code C>
|
|
/* Values that can be returned by execute_command (). */
|
|
#define EXECUTION_FAILURE 1
|
|
#define EXECUTION_SUCCESS 0
|
|
|
|
/* Usage messages by builtins result in a return status of 2. */
|
|
#define EX_BADUSAGE 2
|
|
|
|
/* Special exit statuses used by the shell, internally and externally. */
|
|
#define EX_RETRYFAIL 124
|
|
#define EX_WEXPCOMSUB 125
|
|
#define EX_BINARY_FILE 126
|
|
#define EX_NOEXEC 126
|
|
#define EX_NOINPUT 126
|
|
#define EX_NOTFOUND 127
|
|
|
|
#define EX_SHERRBASE 256 /* all special error values are > this. */
|
|
|
|
#define EX_BADSYNTAX 257 /* shell syntax error */
|
|
#define EX_USAGE 258 /* syntax error in usage */
|
|
#define EX_REDIRFAIL 259 /* redirection failed */
|
|
#define EX_BADASSIGN 260 /* variable assignment error */
|
|
#define EX_EXPFAIL 261 /* word expansion failed */
|
|
</code>
|
|
|