3, user management & document rights management command

User Management Commands

• increase user: useradd 新用户名称
• Change User Password: passwd 新用户名New users need to set a password, or can not log in
• Change the user's shell: chsh [-s 登录的shell路径] [用户名]Note that you need to enter a password to change the shell, if it is a terminal emulator, just after the restart shell that is about to change.
• Change user data: chfn
• Changes to the system administrator root: su [-][用户名[参数]]
• It allows the average user to perform certain commands as root user:sudo 命令
  • Note: let the user use this feature, the super user must configure Sudoers files, configuration commands to visudo Sudoersauthorize users based on their file formats.

Rights management command file

• Change the file's owner (owner or group):chown 使用者账号 文件或目录名
• Change their group file:chgrp 群组名称 文件或目录
• Change file permissions: chmod [ugoa][+-=][rwx] filenameor chmod 权限数字 filename, for example,chmod 777 text.txt

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2020.3.26