需求:
使用for循環批量刪除用戶
[root@mapeng-edu ~]# cat /etc/passwd root:x:0:0:root:/root:/bin/bash .. stu01:x:1001:1001::/home/stu01:/bin/bash stu02:x:1002:1002::/home/stu02:/bin/bash stu03:x:1003:1003::/home/stu03:/bin/bash stu04:x:1004:1004::/home/stu04:/bin/bash stu05:x:1005:1005::/home/stu05:/bin/bash stu06:x:1006:1006::/home/stu06:/bin/bash stu07:x:1007:1007::/home/stu07:/bin/bash stu08:x:1008:1008::/home/stu08:/bin/bash stu09:x:1009:1009::/home/stu09:/bin/bash stu10:x:1010:1010::/home/stu10:/bin/bash
批量刪除其中的stu01-stu10
腳本內容:
#!/bin/bash #mp for i in `/usr/bin/echo stu{01..10}` do userdel -r $i done
執行過程:
[root@mapeng-edu ~]# sh -x userdel.sh ++ /usr/bin/echo stu01 stu02 stu03 stu04 stu05 stu06 stu07 stu08 stu09 stu10 + for i in '`/usr/bin/echo stu{01..10}`' + userdel -r stu01 userdel: user 'stu01' does not exist + for i in '`/usr/bin/echo stu{01..10}`' + userdel -r stu02 userdel: user 'stu02' does not exist
至此使用for循環刪除指定用戶完畢
補充:
不使用for、批量刪除用戶
1)創建環境
[root@mapeng-edu ~]# useradd ctu01 [root@mapeng-edu ~]# useradd ctu02 [root@mapeng-edu ~]# useradd ctu03 [root@mapeng-edu ~]# tail /etc/passwd sshd:x:74:74:Privilege-separated SSH:/var/empty/sshd:/sbin/nologin chrony:x:997:996::/var/lib/chrony:/sbin/nologin nscd:x:28:28:NSCD Daemon:/:/sbin/nologin tcpdump:x:72:72::/:/sbin/nologin www:x:1000:50::/yjdata/www/www:/sbin/nologin mysql:x:27:27:MySQL Server:/var/lib/mysql:/bin/bash peng:x:520:1000:linuxedu:/home/peng:/bin/bash ctu01:x:1001:1001::/home/ctu01:/bin/bash ctu02:x:1002:1002::/home/ctu02:/bin/bash ctu03:x:1003:1003::/home/ctu03:/bin/bash [root@mapeng-edu ~]#
2)編寫腳本-----拼接命令
userdel -r “用戶名”
拼接命令過程
[root@mapeng-edu ~]# echo ctu{01..03} ctu01 ctu02 ctu03 [root@mapeng-edu ~]# echo ctu{01..03}|xargs -n 1 ctu01 ctu02 ctu03 [root@mapeng-edu ~]# echo ctu{01..03}|xargs -n 1|sed 's#.*#userdel -r &#g' userdel -r ctu01 userdel -r ctu02 userdel -r ctu03
3)腳本文件內容
[root@mapeng-edu ~]# cat userdel_v2.sh #!/bin/bash #mp echo ctu{01..03}|xargs -n 1|sed 's#.*#userdel -r &#g'|bash [root@mapeng-edu ~]#
4) 執行結果
[root@mapeng-edu ~]# sh userdel_v2.sh [root@mapeng-edu ~]#