Linux common commands (iv)

Rights Management Command: chmod only the file owner and root user have this permission.

Mode 1:chmod u g o +-= R W x file or directory

Way 2:chmod r-4 w-2 x-1-r Recursive Change permissions

R W X Three permissions are different for files and directories.

Files: r--can view the file contents directory: r--can list content in a directory

Files: w--can modify the file contents directory: w--can create and delete files in the directory

File: x--can execute file directory: w--can enter directory

Chown: Change the owner of a file or directory (only administrator root and file owner can modify)

Syntax: chown the file or directory the user wants to change

CHGRP: Changing the group to which a file or directory belongs

Umask: Display the default permissions of the new file-s default file permissions are not executable, and the directory of X permission is certain, or you can not go to the directory.

Permission Mask

Linux common commands (iv)