我找到了，說明如下：
1.先用 root 身份登入
2.看 man chsh
Possible display items are as follows:
Login: user's login name
Password: user's encrypted password
Uid: user's login
Gid: user's login group
Class: user's general classification
Change: password change time
Expire: account expiration time
Full Name: user's real name
Office Location: user's office location (1)
Office Phone: user's office phone (1)
Home Phone: user's home phone (1)
Other Information: any locally defined parameters for user (1)
Home Directory: user's home directory
Shell: user's login shell
NOTE(1) - In the actual master.passwd file, these fields
are comma-delimited fields embedded in the
FullName field.
重點是下面：
The change field is the date by which the password must be changed.
The expire field is the date on which the account expires.
Both the change and expire fields should be entered in the form ``month
day year'' where month is the month name (the first three characters are
sufficient), day is the day of the month, and year is the year.
3.
動手修改：
host# chsh username
範例：
Change [month day year]: April 5, 2004
Expire [month day year]: April 9, 2004
存檔離開。
然後就可以了!
臭熊
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