What are the different chmod options in Linux?

What are the different chmod options in Linux?

In Linux, the chmod command is used to change the file permissions. The options include:

1. r - Read permission
2. w - Write permission
3. x - Execute permission You can combine these options for user categories: owner, group, and others.

Can you give me an example of how to use chmod?

Sure! To give the owner read and write permissions, and the group read permissions, you would use:

chmod 640 filename

What does the number 640 mean in chmod?

The number 640 represents the permissions:

• 6 (owner): read (4) + write (2)
• 4 (group): read (4)
• 0 (others): no permissions.

How can I set permissions for all users?

To set permissions for all users, you can use:

chmod 777 filename

This gives read, write, and execute permissions to everyone.