CHMOD is used to change permissions of a file PERMISSION COMMAND U G W rwx rwx rwx chmod 777 filename rwx rwx rx chmod 775 filename rwx rx rx chmod 755 filename rw rw r chmod 664 filename rw r r chmod 644 filename U = User G = Group W = World r = Readable w = writable x = executable = no permission Here is another way of looking at it The linux chmod permissions table explains how linux chmod command that place of mathematical operations in linux system, the table lists the different meanings Write their primary and linux chmod permissions table lists its access permissions ofTable 1069 Options for the chmod command This command accepts a file name or multiple file names separated by spaces You can only set file permissions to readwrite, readonly, and no permissions You cannot set file permissions to writeonly 3 Use Chmod With Octal Number To Forbid All Chegg Com Chmod permissions table