linux 统计指定进程内存使用情况到文件 脚本

# desc  :get process meminfo every xxx seconds.
# author :lidp

#!/bin/sh

pid=1036

# pid = `ps|grep xxxx |awk 'NR==1 {print $1}'`
echo $pid

# get meminfo every 3 seconds
interval=3

while true
   do
       DATE=`date +%H:%M:%S-%Y-%m-%d`
       echo $DATE >> proc_memlog.txt
       cat /proc/$pid/status|grep -e VmRSS >> proc_memlog.txt
       echo $blank >> proc_memlog.txt
       sleep $interval

   done