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chmod 777

chmod 777 is rwxrwxrwx.

What 777 grants

WhoDigitPermissionsAdds up as
Owner7read, write, execute4 + 2 + 1 = 7
Group7read, write, execute4 + 2 + 1 = 7
Others7read, write, execute4 + 2 + 1 = 7

When 777 is the right answer

Everyone can do everything. It resolves almost any permission error, which is why it gets suggested so often, and it does so by removing the protection rather than fixing the cause. The real fix is nearly always to change the owner or group so that the process needing access already has it.

The command

chmod 777 filename
chmod -R 777 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

Octal777
Symbolicrwxrwxrwx
As a file in ls -l-rwxrwxrwx
As a directory in ls -ldrwxrwxrwx
Binary111 111 111
World-writableYes — any user on the system can modify this

Frequently asked questions

What does chmod 777 mean?

chmod 777 sets owner to read, write, execute, group to read, write, execute, others to read, write, execute. In symbolic notation that is rwxrwxrwx.

How do I apply 777?

Run chmod 777 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 777 safe?

chmod 777 is world-writable, so any account on the system can modify the contents. That is only appropriate for a shared scratch area, and even then the sticky bit should normally be set as well. For anything else, grant access through a group instead.

What is 777 in symbolic notation?

rwxrwxrwx. Written as ls -l shows it, with a leading file-type character, an ordinary file would appear as -rwxrwxrwx and a directory as drwxrwxrwx.

Other permission values

All permission values · Chmod calculator