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comm not working

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Top Forums Shell Programming and Scripting comm not working
# 8  
Old 05-06-2008
Hi, era.
Quote:
Originally Posted by era
... A good safety measure is to use an explicit locale when using commands which care about collation order.
I don't think I have noticed that problem, but it sounds like a good idea. Rather than specify it individually for each command, I'll use the set, export, and report LC_ALL in my demonstration script templates, at least for a while.

The general problem seems like it would often be masked in threads in the forum because copy / paste will not transfer non-printing characters ... cheers, drl
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LEARN ABOUT NETBSD

comm

COMM(1) 						    BSD General Commands Manual 						   COMM(1)

NAME

     comm -- select or reject lines common to two files

SYNOPSIS

     comm [-123f] file1 file2

DESCRIPTION

     The comm utility reads file1 and file2, which should be sorted lexically, and produces three text columns as output: lines only in file1;
     lines only in file2; and lines in both files.

     The filename ``-'' means the standard input.

     The following options are available:

     -1      Suppress printing of column 1.

     -2      Suppress printing of column 2.

     -3      Suppress printing of column 3.

     -f      Fold case in line comparisons.

     Each column will have a number of tab characters prepended to it equal to the number of lower numbered columns that are being printed.  For
     example, if column number two is being suppressed, lines printed in column number one will not have any tabs preceding them, and lines
     printed in column number three will have one.

     comm assumes that the files are lexically sorted; all characters participate in line comparisons.

EXIT STATUS

     comm exits 0 on success, >0 if an error occurred.

SEE ALSO

     cmp(1), diff(1), sort(1), uniq(1)

STANDARDS

     The comm utility conforms to IEEE Std 1003.2-1992 (``POSIX.2'').

BSD
								   June 6, 1993 							       BSD