How to change permissions and add full rights to a file for everyone?

To change permissions and add full rights for all users to a file in Unix-like systems, the chmod command is used.

Command:

chmod 777 filename

The value 777 means:

• 7 (rwx) — read, write, and execute permissions for the owner
• 7 (rwx) — for the group
• 7 (rwx) — for all others

Thus, all users will have full rights to the file.