chmod 002 Permission Explained
Summary: chmod 002 gives the owner no access, the group no access, and everyone else write.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 0 | |||
| Group (g) | 0 | |||
| Others (o) | 2 |
chmod 002 filename
chmod 002 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Group (g) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Others (o) | 2 |
-w- |
Write only (rarely useful) | No practical effect without x |
Is chmod 002 Safe?
Critical Risk
- Anyone on the system can modify or replace this file.
- Even the owner cannot modify this file without changing permissions first.
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
002 is uncommon in standard Linux setups. The closest widely used permission is chmod 000.
chmod 002 Command Examples
# Apply using octal mode
chmod 002 filename
# Apply using equivalent symbolic mode
chmod u=,g=,o=w filename
# Recursive command warning:
chmod -R 002 /path/to/dir
# Note: -R applies the same mode to files and directories. Use find to treat them separately:
find /path/to/dir -type f -exec chmod 002 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
--------w- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 775 makes new directories 002 and new files 002. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 002 mean?
chmod 002 gives the owner no access, the group no access, and everyone else write. In octal notation, the owner receives 0 (no access), the group receives 0 (no access), and others receive 2 (write).
Is chmod 002 safe?
chmod 002 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 002 in symbolic notation?
In symbolic notation, chmod 002 is represented as -------w-. You can apply this permission using the equivalent symbolic command "chmod u=,g=,o=w filename".
Related Permissions
Change one bit: