user.txt and user_add.sh
[root@logstash ~]# cat user.txt
zhangsan
lisi
wangwu
zhaoliu
liqi
zhangtao
lilei
hanmeimei
agou
amao
[root@logstash ~]# sh user_add.sh
Changing password for user zhangsan.
passwd: all authentication tokens updated successfully.
Changing password for user lisi.
passwd: all authentication tokens updated successfully.
Changing password for user wangwu.
passwd: all authentication tokens updated successfully.
Changing password for user zhaoliu.
passwd: all authentication tokens updated successfully.
Changing password for user liqi.
passwd: all authentication tokens updated successfully.
Changing password for user zhangtao.
passwd: all authentication tokens updated successfully.
Changing password for user lilei.
passwd: all authentication tokens updated successfully.
Changing password for user hanmeimei.
passwd: all authentication tokens updated successfully.
Changing password for user agou.
passwd: all authentication tokens updated successfully.
Changing password for user amao.
passwd: all authentication tokens updated successfully.
[root@logstash ~]#验证：
[root@logstash ~]# cat /etc/passwd |tail -n 10
zhangsan:x:1000:1000::/home/zhangsan:/bin/bash
lisi:x:1001:1001::/home/lisi:/bin/bash
wangwu:x:1002:1002::/home/wangwu:/bin/bash
zhaoliu:x:1003:1003::/home/zhaoliu:/bin/bash
liqi:x:1004:1004::/home/liqi:/bin/bash
zhangtao:x:1005:1005::/home/zhangtao:/bin/bash
lilei:x:1006:1006::/home/lilei:/bin/bash
hanmeimei:x:1007:1007::/home/hanmeimei:/bin/bash
agou:x:1008:1008::/home/agou:/bin/bash
amao:x:1009:1009::/home/amao:/bin/bash
[root@logstash ~]#
