diff options
author | Jim Meyering <jim@meyering.net> | 1999-07-04 10:21:39 +0000 |
---|---|---|
committer | Jim Meyering <jim@meyering.net> | 1999-07-04 10:21:39 +0000 |
commit | ad72fa61c82418c5f3ec80a393e02358dcdb189c (patch) | |
tree | 62b0d92d784205512b87a1bf16a0f16ddd021986 /doc/textutils.texi | |
parent | c3ee42e3b09e64928a9e877cf7f345b8d33e94be (diff) | |
download | coreutils-ad72fa61c82418c5f3ec80a393e02358dcdb189c.tar.xz |
Document locale-specific mode for comm.
Diffstat (limited to 'doc/textutils.texi')
-rw-r--r-- | doc/textutils.texi | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/doc/textutils.texi b/doc/textutils.texi index 1687d39d6..5e39281a6 100644 --- a/doc/textutils.texi +++ b/doc/textutils.texi @@ -2480,7 +2480,12 @@ standard input. Synopsis: comm [@var{option}]@dots{} @var{file1} @var{file2} @end example -The input files must be sorted before @code{comm} can be used. +@vindex LC_COLLATE +Before @code{comm} can be used, the input files must be sorted using the +collating sequence specified by the @env{LC_COLLATE} locale, with +trailing newlines significant. If an input file ends in a non-newline +character, a newline is silently appended. The @code{sort} command with +no options always outputs a file that is suitable input to @code{comm}. @cindex differing lines @cindex common lines @@ -3153,10 +3158,12 @@ lines that have identical join fields. Synopsis: join [@var{option}]@dots{} @var{file1} @var{file2} @end example +@vindex LC_COLLATE Either @var{file1} or @var{file2} (but not both) can be @samp{-}, meaning standard input. @var{file1} and @var{file2} should be already -sorted in increasing order (not numerically) on the join fields; unless -the @samp{-t} option is given, they should be sorted ignoring blanks at +sorted in increasing textual order on the join fields, using the +collating sequence specified by the @env{LC_COLLATE} locale. Unless +the @samp{-t} option is given, the input should be sorted ignoring blanks at the start of the join field, as in @code{sort -b}. If the @samp{--ignore-case} option is given, lines should be sorted without regard to the case of characters in the join field, as in @code{sort -f}. |