#!/bin/sh -
#
#   Oliver Fromme  <olli@fromme.com>
#
#   BSD-style copyright and standard disclaimer applies.
#
#   Note:  This script works for FreeBSD 4.x only!
#   For FreeBSD 6.x, please use jls(1) which is already
#   part of the FreeBSD base system, and jps:
#   http://www.secnetix.de/~olli/scripts/jps
#
#   This script uses ps and /proc/*/status to display an
#   overview of jailed processes.  This is particularly
#   useful when you run several jails on your machine.
#
#   Notes:
#    - procfs must be mounted on /proc.
#    - This script doesn't work inside a jail, of course.
#
#
#   Format of "ps -auxww" output (example):
#
#   $1        $2   $3   $4    $5   $6  $7  $8   $9            $10 $11
#   USER     PID %CPU %MEM   VSZ  RSS  TT  STAT STARTED      TIME COMMAND
#   root    6870  0.0  2.1  3792  816  ??  IsJ  20Sep01   0:21.31 /sbin/sshd
#
#   Format of /proc/*/status (example, one line):
#
#   $1     $2   $3   $4   $5    $6   $7                $8        $9      $10
#   CMD   PID PPID PGID  SID  CTTY FLGS             START     UTIME    STIME
#   sshd 6870    1 6870 6870 -1,-1 sldr 1001021455,773724 20,778070 0,487756
#
#   $11     $12 $13 $14                 $15
#   WCMSG  EUID UID EGID,GIDS           HOSTNAME
#   select    0   0 0,0,0,2,3,4,5,20,31 jail01.haluter.fromme.com
#

A=$(printf '\001')

{
echo "USER${A}PID${A}HOSTNAME${A}COMMAND"
ps -auxww \
| awk '
	($8~/J/) {
		status_file = "/proc/" $2 "/status";
		if ((getline status <status_file) > 0) {
			split (status, st);
			printf "%s\001%s\001%s\001", $1, $2, st[15];
			for (i = 11; i <= NF; i++)
				printf "%s ", $i;
			printf "\n";
		}
		close (status_file);
	}
' \
| sort -t "${A}" +2
} | column -t -s "${A}"

#--