chmod 611 Permission Explained
Summary: chmod 611 gives the owner read/write, the group execute, and everyone else execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 6 | |||
| Group (g) | 1 | |||
| Others (o) | 1 |
chmod 611 filename
chmod 611 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 6 |
rw- |
Read and write | Can list names, cannot enter |
| 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 611 Safe?
Low Risk
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
611 is uncommon in standard Linux setups. The closest widely used permission is chmod 711.
chmod 611 Command Examples
# Apply using octal mode
chmod 611 filename
# Apply using equivalent symbolic mode
chmod u=rw,g=x,o=x filename
# Recursive command warning:
chmod -R 611 /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 611 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-rw---x--x 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 166 makes new directories 611. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 611 mean?
chmod 611 gives the owner read/write, the group execute, and everyone else execute. In octal notation, the owner receives 6 (read/write), the group receives 1 (execute), and others receive 1 (execute).
Is chmod 611 safe?
chmod 611 is classified as Low Risk. Unusual: a lower class has permissions the class above it lacks.
What is chmod 611 in symbolic notation?
In symbolic notation, chmod 611 is represented as rw---x--x. You can apply this permission using the equivalent symbolic command "chmod u=rw,g=x,o=x filename".
Related Permissions
Change one bit: