LIUNIX批量修改密码命令

sky2002

命令：chpasswd
NAME
       chpasswd - update password file in batch
SYNOPSIS
       chpasswd [-e]
DESCRIPTION
       chpasswd  reads  a  file  of user name and password pairs from standard input and uses this information to update a
       group of existing users. Without the -e switch, the passwords are expected to be cleartext. With the -e switch, the
       passwords are expected to be in encrypted form.  Each line is of the format
              user_name:password
       The  named user must exist.  The supplied password will be encrypted as necessary, and the password age updated, if
       present.
       This command is intended to be used in a large system environment where many accounts are created at a single time.
CAVEATS
       The input file must be protected if it contains unencrypted passwords.
执行方法：
先创建用户密码对应文件，格式为username:password，如abc:abc123,保存成文本文件ab.txt.
执行命令:chpasswd

本文来自ChinaUnix博客，如果查看原文请点：http://blog.chinaunix.net/u/1331/showart_2044582.html