chmod 303 Permission Explained
Summary: chmod 303 gives the owner write/execute, the group no access, and everyone else write/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 3 | |||
| Group (g) | 0 | |||
| Others (o) | 3 |
chmod 303 filename
chmod 303 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) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Others (o) | 3 |
-wx |
Write and execute | Can enter and create/delete files, but not list |
Is chmod 303 Safe?
Critical Risk
- Anyone on the system can modify or replace this file.
- 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
303 is uncommon in standard Linux setups. The closest widely used permission is chmod 700.
chmod 303 Command Examples
# Apply using octal mode
chmod 303 filename
# Apply using equivalent symbolic mode
chmod u=wx,g=,o=wx filename
# Recursive command warning:
chmod -R 303 /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 303 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
--wx----wx 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 474 makes new directories 303. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 303 mean?
chmod 303 gives the owner write/execute, the group no access, and everyone else write/execute. In octal notation, the owner receives 3 (write/execute), the group receives 0 (no access), and others receive 3 (write/execute).
Is chmod 303 safe?
chmod 303 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 303 in symbolic notation?
In symbolic notation, chmod 303 is represented as -wx----wx. You can apply this permission using the equivalent symbolic command "chmod u=wx,g=,o=wx filename".
Related Permissions
Change one bit: