前些天用Conference Bot在服务器上搭了个gtalk聊天室. 这个bot是用python写的, 好几年前的东西了.
刚刚在看python的文档, 发现python可以很简单地调用系统命令, 于是试着改下了这个bot的源代码, 直接向这个bot发送一个命令, 就能在gtalk客户端输出vps的运行参数.

修改很简单,添加一个函数即可:

`def acmd_vps(who, msg):
'"/VPS" Print vps status'
if isadmin(who.getStripped()):
VPS=os.popen("/root/lnmp status").readlines()
MEM=os.popen("free -m").readlines()
UPTIMES=os.popen("uptime").readlines()
systoone(who, VPS[9])
systoone(who, VPS[10])
systoone(who, VPS[11])
systoone(who, MEM[2])
systoone(who, UPTIMES[0])
else:
raise ADMIN_COMMAND`

向bot发送命令/vps, bot会返回:
Bot: ### Nginx is runing!
Bot: ### php-fpm is runing!
Bot: ### MySQL running (3085)
Bot: ### -/+ buffers/cache: 159 339
Bot: ### 12:49:20 up 27 day, 2:37, 0 users, load average: 0.00, 0.00, 0.00

服务器环境:
CentOS 5.5 + LNMP一键安装包