monitor

利用C

#!/bin/sh
#
# Copyright (C) 2005 Anders Logg.                             
# Licensed under the GNU LGPL Version 2.1.                                                             
#
# First added:  2005-12-13
# Last changed: 2005-12-13
#            
# Monitor memory usage for given command. This script
# will probably only work on Linux.
#
# Note that this script runs the given command as a new
# process, so killing the script (ctrl-c) won't kill the
# running process.

exec $* &
pid="$!"

echo "Monitoring memory usage for process with id $pid..."
PIDFILE="/proc/$pid/status"
while [ 1 ]; do
    if [ -e $PIDFILE ]; then
	cat $PIDFILE | grep VmSize | awk '{ print $2/1024" MB"}'
    else
	exit 0
    fi
    sleep 1
done