chmod 410 Permission Explained
Summary: chmod 410 gives the owner read, the group execute, and everyone else no access.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 4 | |||
| Group (g) | 1 | |||
| Others (o) | 0 |
chmod 410 filename
chmod 410 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 4 |
r-- |
Read only | Can list names, but not enter |
| Group (g) | 1 |
--x |
Execute only | Can enter (cd) but not list contents |
| Others (o) | 0 |
--- |
No access | Cannot list, enter, or modify |
Is chmod 410 Safe?
Low Risk
- 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
410 is uncommon in standard Linux setups. The closest widely used permission is chmod 400.
chmod 410 Command Examples
# Apply using octal mode
chmod 410 filename
# Apply using equivalent symbolic mode
chmod u=r,g=x,o= filename
# Recursive command warning:
chmod -R 410 /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 410 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-r----x--- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 367 makes new directories 410. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 410 mean?
chmod 410 gives the owner read, the group execute, and everyone else no access. In octal notation, the owner receives 4 (read), the group receives 1 (execute), and others receive 0 (no access).
Is chmod 410 safe?
chmod 410 is classified as Low Risk. Even the owner cannot modify this file without changing permissions first.
What is chmod 410 in symbolic notation?
In symbolic notation, chmod 410 is represented as r----x---. You can apply this permission using the equivalent symbolic command "chmod u=r,g=x,o= filename".
Related Permissions
Change one bit: