前面遇到很多中linux系统管理的方式，今天给大家搜集了关于linux系统管理中使用chpasswd命令的信息。相信它会给大家的带来高效率的工作，希望大家看后会有很大收获。
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
以上是运用chpasswd命令来批量修改密码。是linux系统管理中的捷径。
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