HPUX and comm command Post: 302633937

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Top Forums Shell Programming and Scripting HPUX and comm command Post 302633937 by drl on Wednesday 2nd of May 2012 04:35:18 PM

05-02-2012

Registered User

Hi.

There are many times when I don't want to sort the comm input files. So then I use combine, part of moreutils to be found at: moreutils

Here's a comparison:

Code:

#!/usr/bin/env bash

# @(#) s1       Demonstrate work-alike for comm, not requiring sort.
# http://kitenet.net/~joey/code/moreutils/

# Display context; "version" is local utility.
pe() { for _i;do printf "%s" "$_i";done; printf "\n"; }
pl() { pe;pe "-----" ;pe "$*"; }
db() { ( printf " db, ";for _i;do printf "%s" "$_i";done;printf "\n" ) >&2 ; }
db() { : ; }
pe
version 2>/dev/null && version =o perl comm ./combine
pe " Utility combine is $( wc -l < combine ) lines of perl."

pl " Input data files data[12]:"
head data[12]

pl " Results with comm, unsorted:"
comm -23 data[12]

pl " Results with comm, sorted:"
comm -23 <( sort data1 ) <( sort data2 )

pl " Results with combine, unsorted:"
./combine data1 not data2

exit 0

producing:

Code:

$ ./s1

OS, ker|rel, machine: HP-UX, B.11.11, 9000/712
Distribution        : GenericSysName [HP Release B.11.11] (see /etc/issue)
perl 5.8.0
comm - ( /usr/bin/comm Nov 14 2000 )
./combine - (local: ./combine May 2 21:15 )
 Utility combine is 165 lines of perl.

-----
 Input data files data[12]:
==> data1 <==
2
3
4
1

==> data2 <==
1
2
3

-----
 Results with comm, unsorted:
4
1

-----
 Results with comm, sorted:
4

-----
 Results with combine, unsorted:
4

I don't know if all the moreutils work on HP-UX, but, as you can see, combine does.

Best wishes ... cheers, drl

( edit 1: replace xor with not [same result in this instance] )

Last edited by drl; 05-02-2012 at 05:46 PM..

drl

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comm

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

NAME

     comm -- select or reject lines common to two files

SYNOPSIS

     comm [-123i] 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, lines only in file1.

     -2      Suppress printing of column 2, lines only in file2.

     -3      Suppress printing of column 3, lines common to both.

     -i      Case insensitive comparison of lines.

     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.

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

ENVIRONMENT

     The LANG, LC_ALL, LC_COLLATE, and LC_CTYPE environment variables affect the execution of comm as described in environ(7).

EXIT STATUS

     The comm utility exits 0 on success, and >0 if an error occurs.

SEE ALSO

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

STANDARDS

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

     The -i option is an extension to the POSIX standard.

HISTORY

     A comm command appeared in Version 4 AT&T UNIX.

BSD
								 December 12, 2009							       BSD