chmod 003 Permission Explained
Summary: chmod 003 gives the owner no access, the group no access, and everyone else write/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 0 | |||
| Group (g) | 0 | |||
| Others (o) | 3 |
chmod 003 filename
chmod 003 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 0 |
--- |
No access | Cannot list, enter, or modify |
| 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 003 Safe?
Critical Risk
- Anyone on the system can modify or replace 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
003 is uncommon in standard Linux setups. The closest widely used permission is chmod 000.
chmod 003 Command Examples
# Apply using octal mode
chmod 003 filename
# Apply using equivalent symbolic mode
chmod u=,g=,o=wx filename
# Recursive command warning:
chmod -R 003 /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 003 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
--------wx 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 774 makes new directories 003. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 003 mean?
chmod 003 gives the owner no access, the group no access, and everyone else write/execute. In octal notation, the owner receives 0 (no access), the group receives 0 (no access), and others receive 3 (write/execute).
Is chmod 003 safe?
chmod 003 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 003 in symbolic notation?
In symbolic notation, chmod 003 is represented as -------wx. You can apply this permission using the equivalent symbolic command "chmod u=,g=,o=wx filename".
Related Permissions
Change one bit: