comm not working Post: 302192163

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Top Forums Shell Programming and Scripting comm not working Post 302192163 by drl on Tuesday 6th of May 2008 07:27:55 AM

05-06-2008

Registered User

Hi.

The combination of bash and comm on Solaris 10 seems to work:

Code:

#!/usr/bin/env bash

# @(#) s1       Demonstrate results from comm.

#  ____
# /
# |   Infrastructure BEGIN

echo
set -o nounset

debug=":"
debug="echo"

## The shebang using "env" line is designed for portability. For
#  higher security, use:
#
#  #!/bin/sh -

## Use local command version for the commands in this demonstration.

set +o nounset
echo "(Versions displayed with local utility \"version\")"
version >/dev/null 2>&1 && version =o $(_eat $0 $1) comm
set -o nounset

echo

FILE1=data1
echo " Input file $FILE1:"
cat $FILE1

echo
FILE2=data2
echo " Input file $FILE2:"
cat $FILE2

# |   Infrastructure END
# \
#  ---

echo
echo " Results from processing:"
comm -23 $FILE1 $FILE2

exit 0

Producing

Code:

$ ./s1

(Versions displayed with local utility "version")
SunOS 5.10
GNU bash 3.00.16
comm - no version provided for /usr/bin/comm.

 Input file data1:
CSCeb69473
CSCsg70355
CSCsj78917
CSCsj85065
CSCsl48743
CSCsl72823
CSCsl77748

 Input file data2:
CSCsg39295
CSCsj78917
CSCsj85065
CSCsl72823
CSCsl77748

 Results from processing:
CSCeb69473
CSCsg70355
CSCsl48743

The same results were obtained on Linux 2.6.11 (Debian).

I would next look at the data so see if there are extra non-printing characters ... cheers, drl

drl

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LEARN ABOUT X11R4

comm

COMM(1) 							   User Commands							   COMM(1)

NAME

       comm - compare two sorted files line by line

SYNOPSIS

       comm [OPTION]... FILE1 FILE2

DESCRIPTION

       Compare sorted files FILE1 and FILE2 line by line.

       When FILE1 or FILE2 (not both) is -, read standard input.

       With  no  options,  produce three-column output.  Column one contains lines unique to FILE1, column two contains lines unique to FILE2, and
       column three contains lines common to both files.

       -1     suppress column 1 (lines unique to FILE1)

       -2     suppress column 2 (lines unique to FILE2)

       -3     suppress column 3 (lines that appear in both files)

       --check-order
	      check that the input is correctly sorted, even if all input lines are pairable

       --nocheck-order
	      do not check that the input is correctly sorted

       --output-delimiter=STR
	      separate columns with STR

       --total
	      output a summary

       -z, --zero-terminated
	      line delimiter is NUL, not newline

       --help display this help and exit

       --version
	      output version information and exit

       Note, comparisons honor the rules specified by 'LC_COLLATE'.

EXAMPLES

       comm -12 file1 file2
	      Print only lines present in both file1 and file2.

       comm -3 file1 file2
	      Print lines in file1 not in file2, and vice versa.

AUTHOR

       Written by Richard M. Stallman and David MacKenzie.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report comm translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       join(1), uniq(1)

       Full documentation at: <http://www.gnu.org/software/coreutils/comm>
       or available locally via: info '(coreutils) comm invocation'

GNU coreutils 8.28						   January 2018 							   COMM(1)

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