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Linux命令10、groupadd

  • 2026-07-02 16:32:48
Linux命令10、groupadd
groupadd用来创建用户组，新用户组信息将被添加到系统文件中。
/etc/group    组的账户信息
字段：组名:密码:组标识号(GID):组内用户列表
/etc/gshadow    安全组的账户信息
字段：组名:密码：组管理元名称：组内用户列表
语法
groupadd [-g gid[-o]][-r][-f] group
参数
-g：指定工作组的ID
-r：创建系统工作组，ID小于500
-k：覆盖配置文件/etc/login.defs
-o：允许添加组ID不唯一的组
-f：--force，如果组存在，以成功退出。
实例
创建一个新的组test，并添加组ID为555
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  1. 请求信息 : 2026-07-03 08:14:06 HTTP/2.0 GET : https://f.mffb.com.cn/a/495700.html
  2. 运行时间 : 0.161430s [ 吞吐率：6.19req/s ] 内存消耗：4,388.41kb 文件加载：140
  3. 缓存信息 : 0 reads,0 writes
  4. 会话信息 : SESSION_ID=8474f31652fbf91d1067dc6f3d82d3ac
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  1. CONNECT:[ UseTime:0.000942s ] mysql:host=127.0.0.1;port=3306;dbname=f_mffb;charset=utf8mb4
  2. SHOW FULL COLUMNS FROM `fenlei` [ RunTime:0.001346s ]
  3. SELECT * FROM `fenlei` WHERE `fid` = 0 [ RunTime:0.001594s ]
  4. SELECT * FROM `fenlei` WHERE `fid` = 63 [ RunTime:0.013314s ]
  5. SHOW FULL COLUMNS FROM `set` [ RunTime:0.001409s ]
  6. SELECT * FROM `set` [ RunTime:0.000624s ]
  7. SHOW FULL COLUMNS FROM `article` [ RunTime:0.001397s ]
  8. SELECT * FROM `article` WHERE `id` = 495700 LIMIT 1 [ RunTime:0.001075s ]
  9. UPDATE `article` SET `lasttime` = 1783037646 WHERE `id` = 495700 [ RunTime:0.012244s ]
  10. SELECT * FROM `fenlei` WHERE `id` = 67 LIMIT 1 [ RunTime:0.000573s ]
  11. SELECT * FROM `article` WHERE `id` < 495700 ORDER BY `id` DESC LIMIT 1 [ RunTime:0.002892s ]
  12. SELECT * FROM `article` WHERE `id` > 495700 ORDER BY `id` ASC LIMIT 1 [ RunTime:0.006373s ]
  13. SELECT * FROM `article` WHERE `id` < 495700 ORDER BY `id` DESC LIMIT 10 [ RunTime:0.019768s ]
  14. SELECT * FROM `article` WHERE `id` < 495700 ORDER BY `id` DESC LIMIT 10,10 [ RunTime:0.005928s ]
  15. SELECT * FROM `article` WHERE `id` < 495700 ORDER BY `id` DESC LIMIT 20,10 [ RunTime:0.006249s ]
0.164704s