diff options
Diffstat (limited to 'doc/bash.1')
| -rw-r--r-- | doc/bash.1 | 26 |
1 files changed, 19 insertions, 7 deletions
@@ -5,12 +5,12 @@ .\" Case Western Reserve University .\" chet@po.cwru.edu .\" -.\" Last Change: Wed Dec 21 20:32:29 EST 2011 +.\" Last Change: Sat Dec 24 15:51:37 EST 2011 .\" .\" bash_builtins, strip all but Built-Ins section .if \n(zZ=1 .ig zZ .if \n(zY=1 .ig zY -.TH BASH 1 "2011 December 21" "GNU Bash 4.2" +.TH BASH 1 "2011 December 24" "GNU Bash 4.2" .\" .\" There's some problem with having a `@' .\" in a tagged paragraph with the BSD man macros. @@ -2950,6 +2950,9 @@ ${\fIparameter\fP\fB,,\fP\fIpattern\fP} This expansion modifies the case of alphabetic characters in \fIparameter\fP. The \fIpattern\fP is expanded to produce a pattern just as in pathname expansion. +Each character in the expanded value of \fIparameter\fP is tested against +\fIpattern\fP, and, if it matches the pattern, its case is converted. +The pattern should not attempt to match more than one character. The \fB^\fP operator converts lowercase letters matching \fIpattern\fP to uppercase; the \fB,\fP operator converts matching uppercase letters to lowercase. @@ -6866,7 +6869,11 @@ The variable .SM .B CDPATH defines the search path for the directory containing -.IR dir . +.IR dir : +each directory name in +.SM +.B CDPATH +is searched for \fIdir\fP. Alternative directory names in .SM .B CDPATH @@ -6881,14 +6888,19 @@ then .B CDPATH is not used. The .B \-P -option says to use the physical directory structure instead of -following symbolic links (see also the +option causes \fBcd\fP to use the physical directory structure +by resolving symbolic links while traversing \fIdir\fP and +before processing instances of \fI..\fP in \fIdir\fP (see also the .B \-P option to the .B set builtin command); the .B \-L -option forces symbolic links to be followed. +option forces symbolic links to be followed by resolving the link +after processing instances of \fI..\fP in \fIdir\fP. +If \fI..\fP appears in \fIdir\fP, it is processed by removing the +immediately previous pathname component from \fIdir\fP, back to a slash +or the beginning of \fIdir\fP. If the .B \-e option is supplied with @@ -8851,7 +8863,7 @@ style history substitution. This option is on by default when the shell is interactive. .TP 8 .B \-P -If set, the shell does not follow symbolic links when executing +If set, the shell does not resolve symbolic links when executing commands such as .B cd that change the current working directory. It uses the |