chmod 075 Permission Explained
Summary: chmod 075 gives the owner no access, the group read/write/execute, and everyone else read/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 0 | |||
| Group (g) | 7 | |||
| Others (o) | 5 |
chmod 075 filename
chmod 075 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Group (g) | 7 |
rwx |
Full access | Full access: list, enter, create, delete |
| Others (o) | 5 |
r-x |
Read and execute | Can list and enter |
Is chmod 075 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
075 is uncommon in standard Linux setups. The closest widely used permission is chmod 775.
chmod 075 Command Examples
# Apply using octal mode
chmod 075 filename
# Apply using equivalent symbolic mode
chmod u=,g=rwx,o=rx filename
# Recursive command warning:
chmod -R 075 /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 075 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
----rwxr-x 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 702 makes new directories 075. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 075 mean?
chmod 075 gives the owner no access, the group read/write/execute, and everyone else read/execute. In octal notation, the owner receives 0 (no access), the group receives 7 (read/write/execute), and others receive 5 (read/execute).
Is chmod 075 safe?
chmod 075 is classified as Moderate. Every member of the group can modify this file.
What is chmod 075 in symbolic notation?
In symbolic notation, chmod 075 is represented as ---rwxr-x. You can apply this permission using the equivalent symbolic command "chmod u=,g=rwx,o=rx filename".
Related Permissions
Change one bit: