#!/usr/bin/perl
#  
#  Copyright (c) 2002 Steve Slaven, All Rights Reserved.
#  
#  This program is free software; you can redistribute it and/or
#  modify it under the terms of the GNU General Public License as
#  published by the Free Software Foundation; either version 2 of
#  the License, or (at your option) any later version.
#  
#  This program is distributed in the hope that it will be useful,
#  but WITHOUT ANY WARRANTY; without even the implied warranty of
#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
#  GNU General Public License for more details.
#  
#  You should have received a copy of the GNU General Public License
#  along with this program; if not, write to the Free Software
#  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
#  MA 02111-1307 USA
#  

# Diff /proc/* with ps ax
%ps = ();
open( PS, "ps ax |" );
<PS>;
while( $ps = <PS> )
{
	( $pid, $cmdline ) = $ps =~ /^\s*(\d+)\s+\S+\s+\S+\s+\S+\s+(\S.*)/;
	$cmdline =~ s/\s+$//;

	$ps{ $pid } = $cmdline;
}
close( PS );

opendir( DIR, "/proc" );

print "E = Exists, M = Match\n";
printf( "%-5s %1s %-25s %-25s %-10s\n",
	"PID",
	"E",
	"PS CMD",
	"PROC CMD",
	"NAME" );
print "-" x 70 . "\n";

while( $pid = readdir( DIR ) )
{
	next unless $pid =~ /^\d/;

	$exists = exists( $ps{ $pid } ) ? " " : "*";

	open( IN, "/proc/$pid/cmdline" );
	chomp( $cmdline = <IN> );
	close( IN );

	$cmdline =~ s/\0/ /g;

	open( IN, "/proc/$pid/status" );
	while( $l = <IN> )
	{
		if( $l =~ /^Name/ )
		{
			chomp( $l );
			( $name ) = $l =~ /^Name:\s+(.*)/i;
		}
	}
	close( IN );

	$cmdline =~ s/^(.{0,25}).*$/$1/;
	$ps{ $pid } =~ s/^(.{0,25}).*$/$1/;

	printf( "%05d %1s %-25s %-25s %-10s\n",
		$pid,
		$exists,
		$ps{ $pid },
		$cmdline,
		$name );
}

closedir( DIR );