15. Permission Management in CentOS 7

Permission Management in CentOS7#

drwxr-xr-x root root abc

d/-/l	rwx	r-x	r-x
Type d: directory -: file l: symbolic link	Owner permission (u) r: read w: write x: execute	Group permission (g)	Other permission (o)

drwxr-xr-x	root	root	abc
File type and permission	Owner	Group	File (folder) name

logout		# Log out the current user

Two commands related to permissions:

For example:

Now there is a file with detailed information:

drwxr-xr-x root root student

Now we want to add read permission for the user abc

Since the user is neither the root user nor in the root group

So, look at the last group of permissions

chmod o+w student

Or change the owner and group

chown abc:root

Another example:

Now we want to change the student directory to the following permission

drwx------	abc abc student
# Modify permissions using binary method
rwx --- ---	
111 000 000
chmod 700 student