chfn命令格式：
Usage: chfn [ -f full-name ] [ -o office ] [ -p office-phone ] [ -h home-phone ] [ --help ] [ --version ] [root@localhost ~]# chfn Changing finger information for root. Name [root]: young Office []: geek Office Phone []: 010110110 Home Phone []: 0101101101 Finger information changed. [root@localhost ~]# finger root Login: root Name: young Directory: /root Shell: /bin/bash Office: geek, 010110110 Home Phone: 010-110-1101 On since Sun Jan 1 02:39 (CST) on pts/0 from 192.168.1.116 No mail. No Plan.