1、命令名称:write
执行权限:所有用户 功能描述:向另外一个用户发送信息,以CTRL+D作为结束
语法:write <用户名>
root向luxh用户发送信息
[[email protected] ~]# write luxh
write: luxh is logged in more than once; writing to pts/1
hello,luxh,i am root
用户luxh接收到的信息为
[[email protected] ~]$
Message from [email protected] (as root) on pts/0 at 05:17 ...
hello,luxh,i am root
root用户向luxh用户发送信息,luxh用户必须已经登陆(即远程连接上去,我试过su - user不行),否则是发送不了的。
2、命令名称:wall
执行权限:所有用户 功能描述:向所有用户广播信息
语法:wall [message] [文件名]
root向所有登陆用户发送信息
[[email protected] ~]# wall Happy New Year
Broadcast message from [email protected] (pts/0) (Thu Nov 22 05:27:49 2012):
Happy New Year
已登陆的用户就可以收到
[[email protected] ~]$
Broadcast message from [email protected] (pts/0) (Thu Nov 22 05:27:49 2012):
Happy New Year
时间: 2024-08-24 19:46:14