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