chmod 562 Permission Explained
Summary: chmod 562 gives the owner read/execute, the group read/write, and everyone else write.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 5 | |||
| Group (g) | 6 | |||
| Others (o) | 2 |
chmod 562 filename
chmod 562 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 5 |
r-x |
Read and execute | Can list and enter |
| Group (g) | 6 |
rw- |
Read and write | Can list names, cannot enter |
| Others (o) | 2 |
-w- |
Write only (rarely useful) | No practical effect without x |
Is chmod 562 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
562 is uncommon in standard Linux setups. The closest widely used permission is chmod 666.
chmod 562 Command Examples
# Apply using octal mode
chmod 562 filename
# Apply using equivalent symbolic mode
chmod u=rx,g=rw,o=w filename
# Recursive command warning:
chmod -R 562 /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 562 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-r-xrw--w- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 215 makes new directories 562. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 562 mean?
chmod 562 gives the owner read/execute, the group read/write, and everyone else write. In octal notation, the owner receives 5 (read/execute), the group receives 6 (read/write), and others receive 2 (write).
Is chmod 562 safe?
chmod 562 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 562 in symbolic notation?
In symbolic notation, chmod 562 is represented as r-xrw--w-. You can apply this permission using the equivalent symbolic command "chmod u=rx,g=rw,o=w filename".
Related Permissions
Change one bit: