chmod 011 Permission Explained
Summary: chmod 011 gives the owner no access, the group execute, and everyone else execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 0 | |||
| Group (g) | 1 | |||
| Others (o) | 1 |
chmod 011 filename
chmod 011 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) | 1 |
--x |
Execute only | Can enter (cd) but not list contents |
Is chmod 011 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
011 is uncommon in standard Linux setups. The closest widely used permission is chmod 000.
chmod 011 Command Examples
# Apply using octal mode
chmod 011 filename
# Apply using equivalent symbolic mode
chmod u=,g=x,o=x filename
# Recursive command warning:
chmod -R 011 /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 011 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
------x--x 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 766 makes new directories 011. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 011 mean?
chmod 011 gives the owner no access, the group execute, and everyone else execute. In octal notation, the owner receives 0 (no access), the group receives 1 (execute), and others receive 1 (execute).
Is chmod 011 safe?
chmod 011 is classified as Low Risk. Even the owner cannot modify this file without changing permissions first.
What is chmod 011 in symbolic notation?
In symbolic notation, chmod 011 is represented as -----x--x. You can apply this permission using the equivalent symbolic command "chmod u=,g=x,o=x filename".
Related Permissions
Change one bit: