chmod 673 Permission Explained
Summary: chmod 673 gives the owner read/write, the group read/write/execute, and everyone else write/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 6 | |||
| Group (g) | 7 | |||
| Others (o) | 3 |
chmod 673 filename
chmod 673 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 6 |
rw- |
Read and write | Can list names, cannot enter |
| Group (g) | 7 |
rwx |
Full access | Full access: list, enter, create, delete |
| Others (o) | 3 |
-wx |
Write and execute | Can enter and create/delete files, but not list |
Is chmod 673 Safe?
Critical Risk
- Anyone on the system can modify or replace this file.
- Every member of the group can modify this file.
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
673 is uncommon in standard Linux setups. The closest widely used permission is chmod 777.
chmod 673 Command Examples
# Apply using octal mode
chmod 673 filename
# Apply using equivalent symbolic mode
chmod u=rw,g=rwx,o=wx filename
# Recursive command warning:
chmod -R 673 /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 673 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-rw-rwx-wx 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 104 makes new directories 673. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 673 mean?
chmod 673 gives the owner read/write, the group read/write/execute, and everyone else write/execute. In octal notation, the owner receives 6 (read/write), the group receives 7 (read/write/execute), and others receive 3 (write/execute).
Is chmod 673 safe?
chmod 673 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 673 in symbolic notation?
In symbolic notation, chmod 673 is represented as rw-rwx-wx. You can apply this permission using the equivalent symbolic command "chmod u=rw,g=rwx,o=wx filename".
Related Permissions
Change one bit: