pmodules/bash
0
0
Fork 0
mirror of https://https.git.savannah.gnu.org/git/bash.git synced 2026-07-09 05:00:49 +02:00
Code Issues Packages Projects Releases Wiki Activity

commit bash-20180601 snapshot

Browse Source
This commit is contained in:
Chet Ramey
2018-06-04 09:58:58 -04:00
parent 5c5c75236c
commit 3e03eafff8
25 changed files with 347 additions and 319 deletions
Download Patch File Download Diff File Expand all files Collapse all files
doc/bashref.texi
+25 -11
View File
@@ -876,7 +876,9 @@ zero if no condition tested true.
The syntax of the @code{case} command is:
@example
case @var{word} in [ [(] @var{pattern} [| @var{pattern}]@dots{}) @var{command-list} ;;]@dots{} esac
case @var{word} in
[ [(] @var{pattern} [| @var{pattern}]@dots{}) @var{command-list} ;;]@dots{}
esac
@end example
@code{case} will selectively execute the @var{command-list} corresponding to
@@ -1283,7 +1285,8 @@ from a file (in this case, filenames listed one per line):
@noindent
with a more compact syntax reminiscent of lambdas:
@example
cat list | parallel "do-something1 @{@} config-@{@} ; do-something2 < @{@}" | process-output
cat list | parallel "do-something1 @{@} config-@{@} ; do-something2 < @{@}" |
process-output
@end example
Parallel provides a built-in mechanism to remove filename extensions, which
@@ -1306,13 +1309,21 @@ parallel "zcat @{@} | bzip2 >@{.@}.bz2 && rm @{@}" ::: *.gz
If a command generates output, you may want to preserve the input order in
the output. For instance, the following command
@example
@{ echo foss.org.my ; echo debian.org; echo freenetproject.org; @} | parallel traceroute
@{
echo foss.org.my ;
echo debian.org ;
echo freenetproject.org ;
@} | parallel traceroute
@end example
@noindent
will display as output the traceroute invocation that finishes first.
Adding the @option{-k} option
@example
@{ echo foss.org.my ; echo debian.org; echo freenetproject.org; @} | parallel -k traceroute
@{
echo foss.org.my ;
echo debian.org ;
echo freenetproject.org ;
@} | parallel -k traceroute
@end example
@noindent
will ensure that the output of @code{traceroute foss.org.my} is displayed first.
@@ -4361,8 +4372,8 @@ parent.
@item mapfile
@btindex mapfile
@example
mapfile [-d @var{delim}] [-n @var{count}] [-O @var{origin}] [-s @var{count}] [-t] [-u @var{fd}]
[-C @var{callback}] [-c @var{quantum}] [@var{array}]
mapfile [-d @var{delim}] [-n @var{count}] [-O @var{origin}] [-s @var{count}]
[-t] [-u @var{fd}] [-C @var{callback}] [-c @var{quantum}] [@var{array}]
@end example
Read lines from the standard input into the indexed array variable @var{array},
@@ -4569,8 +4580,8 @@ Read input from file descriptor @var{fd}.
@item readarray
@btindex readarray
@example
readarray [-d @var{delim}] [-n @var{count}] [-O @var{origin}] [-s @var{count}] [-t] [-u @var{fd}]
[-C @var{callback}] [-c @var{quantum}] [@var{array}]
readarray [-d @var{delim}] [-n @var{count}] [-O @var{origin}] [-s @var{count}]
[-t] [-u @var{fd}] [-C @var{callback}] [-c @var{quantum}] [@var{array}]
@end example
Read lines from the standard input into the indexed array variable @var{array},
@@ -6338,9 +6349,12 @@ This chapter describes features unique to Bash.
@section Invoking Bash
@example
bash [long-opt] [-ir] [-abefhkmnptuvxdBCDHP] [-o @var{option}] [-O @var{shopt_option}] [@var{argument} @dots{}]
bash [long-opt] [-abefhkmnptuvxdBCDHP] [-o @var{option}] [-O @var{shopt_option}] -c @var{string} [@var{argument} @dots{}]
bash [long-opt] -s [-abefhkmnptuvxdBCDHP] [-o @var{option}] [-O @var{shopt_option}] [@var{argument} @dots{}]
bash [long-opt] [-ir] [-abefhkmnptuvxdBCDHP] [-o @var{option}]
[-O @var{shopt_option}] [@var{argument} @dots{}]
bash [long-opt] [-abefhkmnptuvxdBCDHP] [-o @var{option}]
[-O @var{shopt_option}] -c @var{string} [@var{argument} @dots{}]
bash [long-opt] -s [-abefhkmnptuvxdBCDHP] [-o @var{option}]
[-O @var{shopt_option}] [@var{argument} @dots{}]
@end example
All of the single-character options used with the @code{set} builtin