chmod 307 Permission Explained
Summary: chmod 307 gives the owner write/execute, the group no access, and everyone else read/write/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 3 | |||
| Group (g) | 0 | |||
| Others (o) | 7 |
chmod 307 filename
chmod 307 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 3 |
-wx |
Write and execute | Can enter and create/delete files, but not list |
| Group (g) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Others (o) | 7 |
rwx |
Full access | Full access: list, enter, create, delete |
Is chmod 307 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.
- Scripts need read permission to run; only compiled binaries can be executed without it.
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
307 is uncommon in standard Linux setups. The closest widely used permission is chmod 755.
chmod 307 Command Examples
# Apply using octal mode
chmod 307 filename
# Apply using equivalent symbolic mode
chmod u=wx,g=,o=rwx filename
# Recursive command warning:
chmod -R 307 /path/to/dir
# Note: -R applies the same mode to files and directories. Use find to treat them separately:
find /path/to/dir -type d -exec chmod 307 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
--wx---rwx 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 470 makes new directories 307. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 307 mean?
chmod 307 gives the owner write/execute, the group no access, and everyone else read/write/execute. In octal notation, the owner receives 3 (write/execute), the group receives 0 (no access), and others receive 7 (read/write/execute).
Is chmod 307 safe?
chmod 307 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 307 in symbolic notation?
In symbolic notation, chmod 307 is represented as -wx---rwx. You can apply this permission using the equivalent symbolic command "chmod u=wx,g=,o=rwx filename".
Related Permissions
Change one bit: