修改密碼

修改XX帳號的密碼
passwd XX

EX:

[ test~]$ passwd XX

Changing password for user XX.
New UNIX password:
Retype new UNIX password:
passwd: all authentication tokens updated successfully.

修改自已的密碼
用帳號登入後，打passwd為修改自已的密碼

先輸入舊密碼，再輸入兩次新密碼即可

EX:

[ test~]$ passwd
Changing password for user testroot.
Changing password for testroot
(current) UNIX password:
New UNIX password:
Retype new UNIX password:
passwd: all authentication tokens updated successfully.
[test ~]$

參考資料:http://linux.vbird.org/linux_basic/0410accountmanager.php#passwd