chmod 607 Permission Explained
Summary: chmod 607 gives the owner read/write, the group no access, and everyone else read/write/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 6 | |||
| Group (g) | 0 | |||
| Others (o) | 7 |
chmod 607 filename
chmod 607 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 6 |
rw- |
Read and write | Can list names, cannot enter |
| Group (g) | 0 |
--- |
No access | Cannot list, enter, or modify |
| Others (o) | 7 |
rwx |
Full access | Full access: list, enter, create, delete |
Is chmod 607 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.
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
607 is uncommon in standard Linux setups. The closest widely used permission is chmod 644.
chmod 607 Command Examples
# Apply using octal mode
chmod 607 filename
# Apply using equivalent symbolic mode
chmod u=rw,g=,o=rwx filename
# Recursive command warning:
chmod -R 607 /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 607 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-rw----rwx 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 170 makes new directories 607. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 607 mean?
chmod 607 gives the owner read/write, the group no access, and everyone else read/write/execute. In octal notation, the owner receives 6 (read/write), the group receives 0 (no access), and others receive 7 (read/write/execute).
Is chmod 607 safe?
chmod 607 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 607 in symbolic notation?
In symbolic notation, chmod 607 is represented as rw----rwx. You can apply this permission using the equivalent symbolic command "chmod u=rw,g=,o=rwx filename".
Related Permissions
Change one bit: