1e41f4b71Sopenharmony_ci# su 2e41f4b71Sopenharmony_ci 3e41f4b71Sopenharmony_ci 4e41f4b71Sopenharmony_ci## 命令功能 5e41f4b71Sopenharmony_ci 6e41f4b71Sopenharmony_cisu用于变更为其他使用者的身份。 7e41f4b71Sopenharmony_ci 8e41f4b71Sopenharmony_ci 9e41f4b71Sopenharmony_ci## 命令格式 10e41f4b71Sopenharmony_ci 11e41f4b71Sopenharmony_cisu [_uid_] [_gid_] 12e41f4b71Sopenharmony_ci 13e41f4b71Sopenharmony_ci 14e41f4b71Sopenharmony_ci## 参数说明 15e41f4b71Sopenharmony_ci 16e41f4b71Sopenharmony_ci**表1** 参数说明 17e41f4b71Sopenharmony_ci 18e41f4b71Sopenharmony_ci| 参数 | 参数说明 | 取值范围 | 19e41f4b71Sopenharmony_ci| -------- | -------- | -------- | 20e41f4b71Sopenharmony_ci| uid | 目标用户的用户id值。 | - 为空。<br/>- [0, 60000] | 21e41f4b71Sopenharmony_ci| gid | 目标用户的群组id值。 | - 为空。<br/>- [0, 60000] | 22e41f4b71Sopenharmony_ci 23e41f4b71Sopenharmony_ci 24e41f4b71Sopenharmony_ci## 使用指南 25e41f4b71Sopenharmony_ci 26e41f4b71Sopenharmony_ci- su命令缺省切换到root用户，uid默认为0，gid为0。 27e41f4b71Sopenharmony_ci 28e41f4b71Sopenharmony_ci- 在su命令后的输入参数uid和gid就可以切换到该uid和gid的用户。 29e41f4b71Sopenharmony_ci 30e41f4b71Sopenharmony_ci- 输入参数超出范围时，会打印提醒输入正确范围参数。 31e41f4b71Sopenharmony_ci 32e41f4b71Sopenharmony_ci 33e41f4b71Sopenharmony_ci## 使用实例 34e41f4b71Sopenharmony_ci 35e41f4b71Sopenharmony_ci举例：su 1000 1000 36e41f4b71Sopenharmony_ci 37e41f4b71Sopenharmony_ci 38e41f4b71Sopenharmony_ci## 输出说明 39e41f4b71Sopenharmony_ci 40e41f4b71Sopenharmony_ci**示例** 切换到为uid为1000，gid为1000的用户 41e41f4b71Sopenharmony_ci 42e41f4b71Sopenharmony_ci``` 43e41f4b71Sopenharmony_ciOHOS # ls 44e41f4b71Sopenharmony_ciDirectory /data/system/param: 45e41f4b71Sopenharmony_ci-rw-r--r-- 0 u:0 g:0 hello_1.txt 46e41f4b71Sopenharmony_ciOHOS # su 1000 1000 47e41f4b71Sopenharmony_ciOHOS # touch hello 2.txt 48e41f4b71Sopenharmony_ciOHOS # ls 49e41f4b71Sopenharmony_ciDirectory /data/system/param: 50e41f4b71Sopenharmony_ci-rw-r--r-- O u:1000 g:1000 hello 2.txt 51e41f4b71Sopenharmony_ci-гw-r--r-- 0 u:0 g:0 hello_1.txt 52e41f4b71Sopenharmony_ci``` 53