finger chfn id 查询个人信息

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finger 命令用于提供指定用户名的基本信息，其实这部分的信息是存储在/etc/passwd第5个段内

root@jiangjian-K42JZ:/etc# grep visitor1 /etc/passwd
visitor1:x:1006:1000:visitor1,A101,123456,121212,working in shanghai:/home/visitor:/bin/zsh
root@jiangjian-K42JZ:/etc# finger visitor1
Login: visitor1                  Name: visitor1
Directory: /home/visitor               Shell: /bin/zsh
Office: A101, 123456           Home Phone: 121212
Never logged in.
No mail.
No Plan.
root@jiangjian-K42JZ:/etc#

chfn 这个命令就是对应上面finger查询的结果，它提供基于提问的形式获取指定用户的个人，同样也是记录到/etc/passwd第5个段内

root@jiangjian-K42JZ:/etc# grep visitor1 /etc/passwd
visitor1:x:1006:1000::/home/visitor:/bin/zsh
root@jiangjian-K42JZ:/etc# finger visitor1
Login: visitor1                  Name:
Directory: /home/visitor               Shell: /bin/zsh
Never logged in.
No mail.
No Plan.
root@jiangjian-K42JZ:/etc# chfn visitor1
Changing the user information for visitor1
Enter the new value, or press ENTER for the default
   Full Name []: full-visitor1
   Room Number []: A101
   Work Phone []: 123456
   Home Phone []: 121212
   Other []: working in shanghai now
root@jiangjian-K42JZ:/etc#

id命令，下面是man文件的解释

ID(1)                                                           User Commands                                                          ID(1)

NAME
       id - print real and effective user and group IDs

SYNOPSIS
       id [OPTION]... [USERNAME]

使用时直接用 id [用户名]

eg:

root@jiangjian-K42JZ:/etc# id visitor
id: visitor: No such user
root@jiangjian-K42JZ:/etc# id visitor1
uid=1006(visitor1) gid=1000(jiangjian) groups=1000(jiangjian),0(root)
root@jiangjian-K42JZ:/etc#

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