chmod 061 Permission Explained
Summary: chmod 061 gives the owner no access, the group read/write, and everyone else execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 0 | |||
| Group (g) | 6 | |||
| Others (o) | 1 |
chmod 061 filename
chmod 061 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Group (g) | 6 |
rw- |
Read and write | Can list names, cannot enter |
| Others (o) | 1 |
--x |
Execute only | Can enter (cd) but not list contents |
Is chmod 061 Safe?
Moderate
- Every member of the group can modify 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
061 is uncommon in standard Linux setups. The closest widely used permission is chmod 660.
chmod 061 Command Examples
# Apply using octal mode
chmod 061 filename
# Apply using equivalent symbolic mode
chmod u=,g=rw,o=x filename
# Recursive command warning:
chmod -R 061 /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 061 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
----rw---x 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 716 makes new directories 061. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 061 mean?
chmod 061 gives the owner no access, the group read/write, and everyone else execute. In octal notation, the owner receives 0 (no access), the group receives 6 (read/write), and others receive 1 (execute).
Is chmod 061 safe?
chmod 061 is classified as Moderate. Every member of the group can modify this file.
What is chmod 061 in symbolic notation?
In symbolic notation, chmod 061 is represented as ---rw---x. You can apply this permission using the equivalent symbolic command "chmod u=,g=rw,o=x filename".
Related Permissions
Change one bit: