linux记录某个程序的内存和CPU占用

• mem.sh

#!/bin/bash

process=$1
out=$1'.txt'
pid=$(ps -e|grep $process| grep -v 'grep' | awk '{print $1;}')
while true
do
	mem=`cat  /proc/$pid/status|grep -e VmRSS`
	cpu=`top -n 1 -p $pid|tail -3|head -1|awk '{ssd=NF-4} {print $ssd}'`  

	echo $(date +"%y-%m-%d-%H:%M:%S")  $mem  $cpu >> $out
	cat /proc/meminfo | grep -E 'MemTotal|MemFree|Cached' >> $out
	echo >> $out
	sleep 180
done

• 使用方法：sh mem.sh 程序名