Linux file permissions assignment

chmod: give the file permissions (change mode)

• File permissions in three: r (read read) w (write write) x (execute execution)

　　

 

• chmod abc: a file owner has permission to other users of the file where the group has b authority, other users have permission to c

　　　　- chmod 736 fileA：

　　　　　　　　　　7 (r + w + x) of the file owner has read-write fileA execute permissions

　　　　　　　　　　3 (_ + w + x) other user group files are located on fileA have write permissions to perform

　　　　　　　　　　6 (r + w + _) executable permissions to other users who have fileA