diff options
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/coreutils.texi | 28 |
1 files changed, 19 insertions, 9 deletions
diff --git a/doc/coreutils.texi b/doc/coreutils.texi index 1c20468cb..589774170 100644 --- a/doc/coreutils.texi +++ b/doc/coreutils.texi @@ -2665,7 +2665,7 @@ These commands work with (or produce) sorted files. @code{sort} sorts, merges, or compares all the lines from the given files, or standard input if none are given or for a @var{file} of -@samp{-}. By default, @code{sort} writes the results to standard +@samp{-}. By default, @command{sort} writes the results to standard output. Synopsis: @example @@ -2699,13 +2699,23 @@ works. @end table +@vindex LC_ALL @vindex LC_COLLATE -A pair of lines is compared as follows: if any key fields have been -specified, @code{sort} compares each pair of fields, in the order -specified on the command line, according to the associated ordering -options, until a difference is found or no fields are left. -Unless otherwise specified, all comparisons use the character -collating sequence specified by the @env{LC_COLLATE} locale. +A pair of lines is compared as follows: if any key fields have +been specified, @code{sort} compares each pair of fields, in the +order specified on the command line, according to the associated +ordering options, until a difference is found or no fields are left. +Unless otherwise specified, all comparisons use the character collating +sequence specified by the @env{LC_COLLATE} locale. @footnote{If you have +arranged to use a non-@sc{posix} locale (e.g., by setting @env{LC_ALL} +to @samp{en_US}), then @command{sort} may produce output that is sorted +differently than you're accustomed to. In that case, set the @env{LC_ALL} +environment variable to @samp{C}. Note that setting only @env{LC_COLLATE} +has two problems. First, it is ineffective if @env{LC_ALL} is also set. +Second, it has undefined behavior if @env{LC_CTYPE} (or @env{LANG}, if +@env{LC_CTYPE} is unset) is set to an incompatible value. For example, +you get undefined behavior if @env{LC_CTYPE} is @code{ja_JP.PCK} but +@env{LC_COLLATE} is @code{en_US.UTF-8}. } If any of the global options @samp{bdfgiMnr} are given but no key fields are specified, @code{sort} compares the entire lines according to the @@ -4571,12 +4581,12 @@ arguments, by default @code{ls} lists just the file name. If no non-option argument is specified, @code{ls} operates on the current directory, acting as if it had been invoked with a single argument of @samp{.}. -@vindex LC_COLLATE +@vindex LC_ALL By default, the output is sorted alphabetically, according to the locale settings in effect. @footnote{If you have arranged to use a non-@sc{posix} locale (e.g., by setting @env{LC_ALL} to @samp{en_US}), then @code{ls} may produce output that is sorted differently than you're accustomed to. -In that case, set the @env{LC_COLLATE} environment variable to @samp{C}.} +In that case, set the @env{LC_ALL} environment variable to @samp{C}.} If standard output is a terminal, the output is in columns (sorted vertically) and control characters are output as question marks; otherwise, the output is listed |