chmod 622 Permission Explained
Summary: chmod 622 gives the owner read/write, the group write, and everyone else write.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 6 | |||
| Group (g) | 2 | |||
| Others (o) | 2 |
chmod 622 filename
chmod 622 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 6 |
rw- |
Read and write | Can list names, cannot enter |
| 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 622 Safe?
Critical Risk
- Anyone on the system can modify or replace this file.
- Every member of the group can modify this file.
Common Use Cases
622 is uncommon in standard Linux setups. The closest widely used permission is chmod 600.
chmod 622 Command Examples
# Apply using octal mode
chmod 622 filename
# Apply using equivalent symbolic mode
chmod u=rw,g=w,o=w filename
# Recursive command warning:
chmod -R 622 /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 622 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-rw--w--w- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 155 makes new directories 622 and new files 622. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 622 mean?
chmod 622 gives the owner read/write, the group write, and everyone else write. In octal notation, the owner receives 6 (read/write), the group receives 2 (write), and others receive 2 (write).
Is chmod 622 safe?
chmod 622 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 622 in symbolic notation?
In symbolic notation, chmod 622 is represented as rw--w--w-. You can apply this permission using the equivalent symbolic command "chmod u=rw,g=w,o=w filename".
Related Permissions
Change one bit: