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finger

与其说 finger(1) 是诊断网络的工具,倒不如说它是诊断网络用户的工具。只要某个服务器在运行着 fingerd(8) 守护进程,你就可以用 finger 获取关于这个服务器上所有用户的有用信息。目前很少有服务器会提供 fingerd,但对那些提供了 fingerd 的服务器,finger 可以说是用来跟踪朋友和同事的好工具。

darkstar:~# finger [email protected]
[cardinal.lizella.net]
Login: alan           			Name: Alan Hicks
Directory: /home/alan               	Shell: /bin/bash
Office: 478 808 9919, 478 935 8133
On since Wed Apr 13 17:43 (UTC) on pts/9 from
75-150-12-113-atlanta.hfc.comcastbusiness.net
    32 minutes 24 seconds idle
     (messages off)
On since Wed Apr 13 17:45 (UTC) on pts/10 from :pts/9:S.0
   48 minutes 56 seconds idle
Mail forwarded to [email protected]
No mail.
No Plan.