770
Octal
rwxrwx---
Symbolic
Use with care
Security
What does chmod 770 mean?
chmod 770 gives owner and group full access. Owner and group can read, write and execute; others are locked out. For shared project directories where a team needs full access.
| Who | Digit | Symbolic | Permissions |
|---|---|---|---|
| Owner (user) | 7 | rwx | read, write, execute |
| Group | 7 | rwx | read, write, execute |
| Others | 0 | --- | no access |
Each digit is the sum of read (4), write (2) and execute (1). In ls -l the file shows as -rwxrwx--- and a directory as drwxrwx---.
How to use chmod 770
# one file or directory
chmod 770 filename
# the same permissions in symbolic form
chmod u=rwx,g=rwx,o= filename
# a directory and everything inside it
chmod -R 770 directory/
# only directories (keep files separate)
find path/ -type d -exec chmod 770 {} +Need a different combination? Tick the boxes in the chmod calculator to get the octal and symbolic values instantly.
Chmod calculatorToggle read, write and execute for owner, group and others to build any permission.
Open the calculator Frequently asked questions
What does chmod 770 do?
It sets the permissions to rwxrwx---: the owner gets read, write, execute, the group read, write, execute and others no access.
What is 770 in symbolic notation?
rwxrwx---, or chmod u=rwx,g=rwx,o= as a symbolic chmod command.Is chmod 770 safe?
It is fine in controlled setups, but it grants write access beyond the owner — make sure the group (or everyone, for the sticky bit) is intended.