Access permission

1.       chmod

Type		Access permission
		User	Group	Other
Directory	d	rwx	r-x	r--
File	-	r-x	r-x	r--
command		u+(access per.)	g+(access per.)	o+(access per.)

Description	Letter representation	Numerical value
readable	r	4
writable	w	2
executable	x	1

Ø  chmod numericalValue filename.fileFormat >>>Ex: chmod 777 file1.txt
Ø  chmod command+letterRepresentation filename.fileFormat >>>Ex: chmod g+w file1.txt

2.       chwon
Ø  chown -R userName:groupName directoryName -: to set a user from the related group as the owner of related directory
>>>Ex: chown -R daniel:admins dir1