2016/8/18 Linux Common commands: Rights Management commands

1. Change file or directory permissions: chmod

chmod [{Ugoa} {+-=} {rwx}] [file directory] [mode=42] [file or directory]

Digital representation of permissions: R---4 w---2 x---1 rwxrw-r--:764

chmod u+x Test.list

Chmod-r 421 TestDir

-R Recursive modification: all users under directory and directory have permissions

2. Change the file or directory owner: chown

chown [user] [file or directory]: chown Bob fengjie.list

3. Change the owning group of the file or directory: CHGRP

Charp [user Group] [file or directory]: chgrp Bob fengjie.list

4. Display, set default permissions for files: umask

Umask [-S]

-S to display the new file default permissions in rwx form

Umask 023 so that the permissions for new files are 777-023 = 754

　　

2016/8/18 Linux Common commands: Rights Management commands