用户管理权限全解(国外英文资料).docVIP

用户管理权限全解(国外英文资料) Full user management rights solution: There is only one ROOT account. You want the average user to have access to the ROOT account, and then enter Chmod o +rw [fileName]. It is recommended that you use man Chmod to see the detailed description of chmod. Modify permissions: 1) the tool or command that manages the user (user); Useradd note: adding users AddUser note: adding users Passwd note: set the password for the user Usermod note: modifying user commands, you can modify login names, user home directories, and so on through usermod; Pwcov note: sync users from /etc/passwd to /etc/shadow Pwck note: pwck is the check user configuration file /etc/passwd and /etc/shadow file content is legal or complete; Pwunconv note: pwcov is a vertical reverse operation that creates /etc/passwd from /etc/shadow and /etc/passwd, and then deletes the /etc/shadow file; Finger note: View user information tools ID note: check the users UID, GID, and the user group to which it belongs Chfn note: change user information tools Su note: user switching tools Note: sudo sudo is to execute commands by another user (execute a command as another user), Su is used to switch the user, and then switch to the user to complete the corresponding task, but behind the sudo can directly execute commands such as sudo, do not need root password can perform root with the execution of only root the implementation of the corresponding command; but through visudo to edit /etc/sudoers to realize; Visudo note: visodo is the command to edit VI; you can edit /etc/sudoers directly without this command; the effect of /etc/sudoers is the same; Sudoedit note: almost as much as sudo. 2) tools or commands for managing user groups (group); Groupadd note: adding user groups; Groupdel note: delete user group; Groupmod note: modifying user group information Groups note: displays the user group to which the user belongs Grpck Grpconv note: to synchronize or create /etc/gshadow through the file contents of /e