chmod 025 Permission Explained
Summary: chmod 025 gives the owner no access, the group write, and everyone else read/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 0 | |||
| Group (g) | 2 | |||
| Others (o) | 5 |
chmod 025 filename
chmod 025 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Group (g) | 2 |
-w- |
Write only (rarely useful) | No practical effect without x |
| Others (o) | 5 |
r-x |
Read and execute | Can list and enter |
Is chmod 025 Safe?
Moderate
- Every member of the group can modify this file.
- Any user can read this file — never use it for secrets such as keys or .env files.
- 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
025 is uncommon in standard Linux setups. The closest widely used permission is chmod 000.
chmod 025 Command Examples
# Apply using octal mode
chmod 025 filename
# Apply using equivalent symbolic mode
chmod u=,g=w,o=rx filename
# Recursive command warning:
chmod -R 025 /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 025 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-----w-r-x 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 752 makes new directories 025. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 025 mean?
chmod 025 gives the owner no access, the group write, and everyone else read/execute. In octal notation, the owner receives 0 (no access), the group receives 2 (write), and others receive 5 (read/execute).
Is chmod 025 safe?
chmod 025 is classified as Moderate. Every member of the group can modify this file.
What is chmod 025 in symbolic notation?
In symbolic notation, chmod 025 is represented as ----w-r-x. You can apply this permission using the equivalent symbolic command "chmod u=,g=w,o=rx filename".
Related Permissions
Change one bit: