You can get what you want to with adding users in particular group and then applying full permission to that group.

(echo $USER & echo $LOGNAME is helpful to get username and logname)

Example:

If/Let:

dir1 is directory to which you want to apply full permission to user,

user1 is user to which you want to give full permission,

group1 is existing or to be create for giving full permission.

Then following command-line information can help you:

1. group1 can be created using following command:

   
   
   

   sudo addgroup group1
   
   




2. user1 can be added to group1 using following command:

   
   
   

   sudo adduser pandya group1
   
   




3. Now permissions can be applied using following commands:

   
   
   

   sudo chown :group1 -R dir1
   
   sudo chmod g+rwx group1
   
   

Explanation:

• sudo chown :group1 -R dir1 will apply group1 to dir1 recursively by -R (to all sub directories and files)


• sudo chmod g+rwx group1 will apply read+write+execution permission to group1


• As user1 is in group1 so-that now user1 has full permission via group1 for dir1 recursively!

Verification:

$ ls -ld dir1

drwxrwxr-x 3 pandya group1 4096 Aug  3 12:11 example

where drwxrwxr-x indicates d for directory 1st rwx for owner(u=pandya) permission 2nd rwx for group(g=group1) permission and r-x for other(o) permission in ugo manner.