chmod 010 Permission Explained
Summary: chmod 010 gives the owner no access, the group execute, and everyone else no access.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 0 | |||
| Group (g) | 1 | |||
| Others (o) | 0 |
chmod 010 filename
chmod 010 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 0 |
--- |
No access | Cannot list, enter, or modify |
| 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 010 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
010 is uncommon in standard Linux setups. The closest widely used permission is chmod 000.
chmod 010 Command Examples
# Apply using octal mode
chmod 010 filename
# Apply using equivalent symbolic mode
chmod u=,g=x,o= filename
# Recursive command warning:
chmod -R 010 /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 010 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
------x--- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 767 makes new directories 010. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 010 mean?
chmod 010 gives the owner no access, the group execute, and everyone else no access. In octal notation, the owner receives 0 (no access), the group receives 1 (execute), and others receive 0 (no access).
Is chmod 010 safe?
chmod 010 is classified as Low Risk. Even the owner cannot modify this file without changing permissions first.
What is chmod 010 in symbolic notation?
In symbolic notation, chmod 010 is represented as -----x---. You can apply this permission using the equivalent symbolic command "chmod u=,g=x,o= filename".
Related Permissions
Change one bit: