命令
chpasswd
描述
update passwords in batch mode
以批处理模式更改用户密码
用法
选项
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| Options: -c 加密方法(可选项NONE DES MD5 SHA256 SHA512) -e 不加密 -m 以md5方法加密
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注意
可以同时更改多个用户密码,用户必须已存在,该命令不支持创建用户.
示例
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| $ cat a usera:aaa userb:bbb userc:ccc
$ cat a | chpasswd $ tail -3 /etc/shadow usera:$6$ir9AM/DEkr$at.ligiOTaP0mAA06r7DaagC3HvWTaJhDqKYpcR0fkKlaqkJP1ZUC14ADvYOO.3jNwaFRWq0Uy7/JWUul5Fcr.:18635:0:99999:7::: userb:$6$kEcPrWAFoCqQ$M6YfJPE9nzEK4AerKqfTQr8ubS6Px2vI.V8chml9uj8sVRenckK6Qgd.EM60s2TzO.Efq9pI5k5gPVsjmvR6M.:18635:0:99999:7::: userc:$6$Wqmd./kFR3$rn1caajtDbkayEk7xKlrYaxNGGqPMJA8lbWjURJhD1nY8MYtDaQKHw7.3Wzlwc680xHPvmJaYM06MpaRTy9pP/:18635:0:99999:7::: $ grep ENCRYPT_METHOD /etc/login.defs
ENCRYPT_METHOD SHA512
$ cat a | chpasswd -m $ tail -3 /etc/shadow usera:$1$n9dID/ee$QZmC.N1Fr2L4Z5WBtfKmy.:18635:0:99999:7::: userb:$1$EP4yw/DN$zVWwjU7t9WQTJCCtmUdFd0:18635:0:99999:7::: userc:$1$zT96B/Xb$FpPNk2MPCMUHfaE7Gh5te/:18635:0:99999:7:::
$ cat a | chpasswd -c SHA256 $ tail -3 /etc/shadow usera:$5$hFANqw/xGOijs.$vjngjHRQ3KJzgtPTdhf1P2bD3mlQRWzH/6pTjSbB3Q6:18635:0:99999:7::: userb:$5$8RGVm/.IoSwO$0UwnKBm1ZjwiLeNtOqiRlAbhXQNvAZbqWmNaU4M7h.5:18635:0:99999:7::: userc:$5$QHqDH/aZKwn6$r1BuQJXdAPPZZjjvJyYRxG2y7mqXVPf33Cp0uAuMkB6:18635:0:99999:7:::
$ cat a | chpasswd -e $ tail -3 /etc/shadow usera:aaa:18635:0:99999:7::: userb:bbb:18635:0:99999:7::: userc:ccc:18635:0:99999:7:::
$ echo "user1:aa" | chpasswd chpasswd: line 1: user 'user1' does not exist chpasswd: error detected, changes ignored
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