Linux Permissions

Change file access permissions.

Set owner rwx, group and others r-x.

Add execute permission to a file.

Recursively change permissions in a directory.

Change file owner and group.

Recursively change ownership of a directory.

Change group ownership of a file.

Set default file creation permission mask.

Execute a command as another user (default root).

Switch to another user account.

Change user password.

Display user and group identity information.