chmod 750
chmod 750 is rwxr-x---.
What 750 grants
| Who | Digit | Permissions | Adds up as |
|---|---|---|---|
| Owner | 7 | read, write, execute | 4 + 2 + 1 = 7 |
| Group | 5 | read, execute | 4 + 1 = 5 |
| Others | 0 | no access | 0 |
When 750 is the right answer
Owner has full access, the group can read and traverse, others get nothing. The standard setting for a directory shared with one group but private from everyone else.
The command
chmod 750 filename
chmod -R 750 directory/Because the owner has the execute bit, this works on a directory as well as a file — on a directory, execute is what grants the right to enter it and reach the entries inside.
How it is written elsewhere
| Octal | 750 |
| Symbolic | rwxr-x--- |
As a file in ls -l | -rwxr-x--- |
As a directory in ls -l | drwxr-x--- |
| Binary | 111 101 000 |
| World-writable | No |
Frequently asked questions
What does chmod 750 mean?
It sets owner to read, write, execute, group to read, execute, others to no access. In symbolic notation that is rwxr-x---.
How do I apply 750?
Run chmod 750 filename. Add -R to apply it to a directory and everything inside, though be careful: a recursive numeric chmod marks every file the same way, which is rarely correct for a mixed tree of files and directories.
Is 750 safe?
It grants no write access outside the owner, so it is a reasonable setting as long as the owner is the account you intend.
What is 750 in symbolic notation?
rwxr-x---. Written as ls -l shows it, with a leading file-type character, an ordinary file would appear as -rwxr-x--- and a directory as drwxr-x---.