chmod 460 Permission Explained
Summary: chmod 460 gives the owner read, the group read/write, and everyone else no access.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 4 | |||
| Group (g) | 6 | |||
| Others (o) | 0 |
chmod 460 filename
chmod 460 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 4 |
r-- |
Read only | Can list names, but not enter |
| Group (g) | 6 |
rw- |
Read and write | Can list names, cannot enter |
| Others (o) | 0 |
--- |
No access | Cannot list, enter, or modify |
Is chmod 460 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
460 is uncommon in standard Linux setups. The closest widely used permission is chmod 660.
chmod 460 Command Examples
# Apply using octal mode
chmod 460 filename
# Apply using equivalent symbolic mode
chmod u=r,g=rw,o= filename
# Recursive command warning:
chmod -R 460 /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 460 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-r--rw---- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 317 makes new directories 460 and new files 460. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 460 mean?
chmod 460 gives the owner read, the group read/write, and everyone else no access. In octal notation, the owner receives 4 (read), the group receives 6 (read/write), and others receive 0 (no access).
Is chmod 460 safe?
chmod 460 is classified as Moderate. Every member of the group can modify this file.
What is chmod 460 in symbolic notation?
In symbolic notation, chmod 460 is represented as r--rw----. You can apply this permission using the equivalent symbolic command "chmod u=r,g=rw,o= filename".
Related Permissions
Change one bit: