chmod 417 Permission Explained
Summary: chmod 417 gives the owner read, the group execute, and everyone else read/write/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 4 | |||
| Group (g) | 1 | |||
| Others (o) | 7 |
chmod 417 filename
chmod 417 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) | 7 |
rwx |
Full access | Full access: list, enter, create, delete |
Is chmod 417 Safe?
Critical Risk
- Anyone on the system can modify or replace 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
417 is uncommon in standard Linux setups. The closest widely used permission is chmod 555.
chmod 417 Command Examples
# Apply using octal mode
chmod 417 filename
# Apply using equivalent symbolic mode
chmod u=r,g=x,o=rwx filename
# Recursive command warning:
chmod -R 417 /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 417 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-r----xrwx 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 360 makes new directories 417. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 417 mean?
chmod 417 gives the owner read, the group execute, and everyone else read/write/execute. In octal notation, the owner receives 4 (read), the group receives 1 (execute), and others receive 7 (read/write/execute).
Is chmod 417 safe?
chmod 417 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 417 in symbolic notation?
In symbolic notation, chmod 417 is represented as r----xrwx. You can apply this permission using the equivalent symbolic command "chmod u=r,g=x,o=rwx filename".
Related Permissions
Change one bit: