What are other file permissions?

In Linux, file permissions are categorized into three types for three different user groups: owner, group, and others. Each type of permission can be represented as follows:

1. Read (r): Permission to view the contents of the file.
2. Write (w): Permission to modify or delete the file.
3. Execute (x): Permission to run the file as a program or script.

Permission Combinations:

• rwx: Full permissions (read, write, execute).
• rw-: Read and write permissions (no execute).
• r-x: Read and execute permissions (no write).
• r--: Read-only permission.
• -wx: Write and execute permissions (no read).
• --x: Execute-only permission.
• ---: No permissions at all.

Numeric Representation:

Permissions can also be represented numerically:

• Read (r) = 4
• Write (w) = 2
• Execute (x) = 1

You can combine these values to set permissions using the chmod command. For example:

• chmod 755 filename sets permissions to rwxr-xr-x (owner can read, write, execute; group and others can read and execute).

If you need more details or examples, feel free to ask!