chmod 022 Permission Explained
Summary: chmod 022 gives the owner no access, the group write, and everyone else write.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 0 | |||
| Group (g) | 2 | |||
| Others (o) | 2 |
chmod 022 filename
chmod 022 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Group (g) | 2 |
-w- |
Write only (rarely useful) | No practical effect without x |
| Others (o) | 2 |
-w- |
Write only (rarely useful) | No practical effect without x |
Is chmod 022 Safe?
Critical Risk
- Anyone on the system can modify or replace this file.
- Every member of the group can modify 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
022 is uncommon in standard Linux setups. The closest widely used permission is chmod 000.
chmod 022 Command Examples
# Apply using octal mode
chmod 022 filename
# Apply using equivalent symbolic mode
chmod u=,g=w,o=w filename
# Recursive command warning:
chmod -R 022 /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 022 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-----w--w- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 755 makes new directories 022 and new files 022. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 022 mean?
chmod 022 gives the owner no access, the group write, and everyone else write. In octal notation, the owner receives 0 (no access), the group receives 2 (write), and others receive 2 (write).
Is chmod 022 safe?
chmod 022 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 022 in symbolic notation?
In symbolic notation, chmod 022 is represented as ----w--w-. You can apply this permission using the equivalent symbolic command "chmod u=,g=w,o=w filename".
Related Permissions
Change one bit: