Chmod 750 Explained
Chmod 750 gives the owner full access and group read+execute. Others have no access. Ideal for shared project directories.
Permission
750
rwxr-x---
chmod 750 filename
Permission Breakdown
| Role | Read (4) | Write (2) | Execute (1) | Octal | Meaning |
|---|---|---|---|---|---|
| Owner | r | w | x | 7 | read, write, execute |
| Group | r | - | x | 5 | read, execute |
| Others | - | - | - | 0 | no permissions |
Visual Permission Grid
Detailed Explanation
The permission 750 provides a balanced security model where the owner has full control, group members have read and execute access, and everyone else is locked out.
Octal breakdown:
- 7 (Owner): read (4) + write (2) + execute (1) = full access
- 5 (Group): read (4) + execute (1) = read and execute
- 0 (Others): no access at all
In symbolic notation this is rwxr-x---. The owner can do anything with the file. Group members can read the file and execute it (or traverse a directory) but cannot modify it. Other users on the system cannot even see the file contents.
This permission is more secure than 755 because it restricts access from users outside the file's group. It is commonly used in shared hosting environments and team project directories where only specific team members (in the group) should have access, while other users on the server should be denied access entirely.
Use Case
Ideal for application directories in shared hosting where the web server user is in the file's group. Prevents other hosting accounts from accessing your files.