source: trunk/third/perl/eg/shmkill @ 9009

#!/usr/bin/perl

# $Header: /afs/dev.mit.edu/source/repository/third/perl/eg/shmkill,v 1.1.1.1 1996-10-02 06:40:05 ghudson Exp $

# A script to call from crontab periodically when people are leaving shared
# memory sitting around unattached.

open(ipcs,'ipcs -m -o|') || die "Can't run ipcs: $!";

while (<ipcs>) {
    $tmp = index($_,'NATTCH');
    $pos = $tmp if $tmp >= 0;
    if (/^m/) {
        ($m,$id,$key,$mode,$owner,$group,$attach) = split;
        if ($attach != substr($_,$pos,6)) {
            die "Different ipcs format--can't parse!\n";
        }
        if ($attach == 0) {
            push(@goners,'-m',$id);
        }
    }
}

exec 'ipcrm', @goners if $#goners >= 0;