chmod 366 Permission Explained
Summary: chmod 366 gives the owner write/execute, the group read/write, and everyone else read/write.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 3 | |||
| Group (g) | 6 | |||
| Others (o) | 6 |
chmod 366 filename
chmod 366 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) | 6 |
rw- |
Read and write | Can list names, cannot enter |
| Others (o) | 6 |
rw- |
Read and write | Can list names, cannot enter |
Is chmod 366 Safe?
Critical Risk
- Anyone on the system can modify or replace this file.
- Every member of the group can modify this file.
- Any user can read this file — never use it for secrets such as keys or .env files.
- Scripts need read permission to run; only compiled binaries can be executed without it.
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
366 is uncommon in standard Linux setups. The closest widely used permission is chmod 666.
chmod 366 Command Examples
# Apply using octal mode
chmod 366 filename
# Apply using equivalent symbolic mode
chmod u=wx,g=rw,o=rw filename
# Recursive command warning:
chmod -R 366 /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 366 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
--wxrw-rw- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 411 makes new directories 366. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 366 mean?
chmod 366 gives the owner write/execute, the group read/write, and everyone else read/write. In octal notation, the owner receives 3 (write/execute), the group receives 6 (read/write), and others receive 6 (read/write).
Is chmod 366 safe?
chmod 366 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 366 in symbolic notation?
In symbolic notation, chmod 366 is represented as -wxrw-rw-. You can apply this permission using the equivalent symbolic command "chmod u=wx,g=rw,o=rw filename".
Related Permissions
Change one bit: