chmod 330 Permission Explained

Octal

330

Symbolic

-wx-wx---

Binary

011 011 000

Risk Level

Moderate

Summary: chmod 330 gives the owner write/execute, the group write/execute, and everyone else no access.

Class	Read (4)	Write (2)	Execute (1)	Octal
Owner (u)				3
Group (g)				3
Others (o)				0

setuid (4) setgid (2) sticky bit (1)

Octal

Symbolic

Target File / Path

-R Recursive -v Verbose

330

-wx-wx---

Owner: write/execute · Group: write/execute · Others: no access

chmod 330 filename

Moderate Every member of the group can modify this file.

View the full chmod 330 guide →

chmod 330 Breakdown

Class	Digit	Symbolic	On a file	On a directory
Owner (u)	`3`	`-wx`	Write and execute	Can enter and create/delete files, but not list
Group (g)	`3`	`-wx`	Write and execute	Can enter and create/delete files, but not list
Others (o)	`0`	`---`	No access	Cannot list, enter, or modify

Is chmod 330 Safe?

Moderate

Every member of the group can modify this file.
Scripts need read permission to run; only compiled binaries can be executed without it.

Common Use Cases

330 is uncommon in standard Linux setups. The closest widely used permission is chmod 770.

chmod 330 Command Examples

# Apply using octal mode
chmod 330 filename

# Apply using equivalent symbolic mode
chmod u=wx,g=wx,o= filename

# Recursive command warning:
chmod -R 330 /path/to/dir
# Note: -R applies the same mode to files and directories. Use find to treat them separately:
find /path/to/dir -type d -exec chmod 330 {} +

# Verify permissions
stat -c '%a %A %n' filename    # Linux
stat -f '%Lp %Sp %N' filename   # macOS

# Example ls -l output:
--wx-wx--- 1 alice staff 1024 Jan 15 10:00 example.txt

umask Relationship

A umask of 447 makes new directories 330. Test umask values with our interactive Umask Calculator.

Frequently Asked Questions

What does chmod 330 mean?

chmod 330 gives the owner write/execute, the group write/execute, and everyone else no access. In octal notation, the owner receives 3 (write/execute), the group receives 3 (write/execute), and others receive 0 (no access).

Is chmod 330 safe?

chmod 330 is classified as Moderate. Every member of the group can modify this file.

What is chmod 330 in symbolic notation?

In symbolic notation, chmod 330 is represented as -wx-wx---. You can apply this permission using the equivalent symbolic command "chmod u=wx,g=wx,o= filename".