=====================
= THE CHMOD COMMAND =
=====================

First here are few things you need to know:
-----------------------------------------------

- File Ownerships
  (u)ser , (g)roup , (o)thers

- File Permissions
  (r)ead , (w)rite , e(x)ecute


- View Permissions with ls command

EXAMPLE: ls -l [PRESS ENTER]
         -rwxr-xr--  2 iclunk  nobody    512 Dec  8 12:40 sdf-noob.txt
         -rw-------  2 iclunk  nobody    512 Jun 12 12:34 newfile.txt	

- Permissions Breakdown
     
   (u)ser (g)roup (o)thers
    -rw-    xr-    xr-      2 iclunk  nobody    512 Dec  8 12:40 sdf-noob.txt
	1)First section is permissions for user  
        2)Second section is for group
	3)Third section is for others

-NOTE:
 The d at the beginning of the line stands for directory. 
 
 drwxr-xr--  2 iclunk  nobody    512 Dec  8 12:40 articles
 drwxr-xr--  2 iclunk  nobody    512 Jul 14 18:31 bin
 drwxr-xr--  2 iclunk  nobody    512 Dec  8 12:52 books


Examples of CHMOD command:
-----------------------------------------------

$chmod g+w sdf-noob.txt [PRESS ENTER]
$ls -l [PRESS ENTER]
-rw-------  2 iclunk  nobody    512 Jun 12 12:34 newfile.txt	
-rwxrwxr--  2 iclunk  nobody    512 Dec  8 12:40 sdf-noob.txt

[Gives the group (w)rite permission to the sdf-noob.txt file] 


$chmod u+x,g+rx,o+r newfile.txt
$ls -l [PRESS ENTER]
-rwxr-xr--  2 iclunk  nobody    512 Jun 12 12:34 newfile.txt	

[The above is a good example for gopher file permissions]


$chmod u-wx articles [PRESS ENTER]
$ls -l {PRESS ENTER]
dr--r-xr--  2 iclunk  nobody    512 Dec  8 12:40 articles
drwxr-xr--  2 iclunk  nobody    512 Jul 14 18:31 bin
drwxr-xr--  2 iclunk  nobody    512 Dec  8 12:52 books

[Removes the (w)rite and e(x)ecute permissions from the articles directory]






---------------------------------
Another great document by iclunk. 
References:
https://www.freecodecamp.org/news/linux-chmod-chown-change-file-permissions/