chmod 415 Permission Explained
Summary: chmod 415 gives the owner read, the group execute, and everyone else read/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 4 | |||
| Group (g) | 1 | |||
| Others (o) | 5 |
chmod 415 filename
chmod 415 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 4 |
r-- |
Read only | Can list names, but not enter |
| Group (g) | 1 |
--x |
Execute only | Can enter (cd) but not list contents |
| Others (o) | 5 |
r-x |
Read and execute | Can list and enter |
Is chmod 415 Safe?
Low Risk
- 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
415 is uncommon in standard Linux setups. The closest widely used permission is chmod 555.
chmod 415 Command Examples
# Apply using octal mode
chmod 415 filename
# Apply using equivalent symbolic mode
chmod u=r,g=x,o=rx filename
# Recursive command warning:
chmod -R 415 /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 415 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-r----xr-x 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 362 makes new directories 415. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 415 mean?
chmod 415 gives the owner read, the group execute, and everyone else read/execute. In octal notation, the owner receives 4 (read), the group receives 1 (execute), and others receive 5 (read/execute).
Is chmod 415 safe?
chmod 415 is classified as Low Risk. Any user can read this file — never use it for secrets such as keys or .env files.
What is chmod 415 in symbolic notation?
In symbolic notation, chmod 415 is represented as r----xr-x. You can apply this permission using the equivalent symbolic command "chmod u=r,g=x,o=rx filename".
Related Permissions
Change one bit: