chmod 671 Permission Explained
Summary: chmod 671 gives the owner read/write, the group read/write/execute, and everyone else execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 6 | |||
| Group (g) | 7 | |||
| Others (o) | 1 |
chmod 671 filename
chmod 671 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) | 1 |
--x |
Execute only | Can enter (cd) but not list contents |
Is chmod 671 Safe?
Moderate
- Every member of the group can modify this file.
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
671 is uncommon in standard Linux setups. The closest widely used permission is chmod 775.
chmod 671 Command Examples
# Apply using octal mode
chmod 671 filename
# Apply using equivalent symbolic mode
chmod u=rw,g=rwx,o=x filename
# Recursive command warning:
chmod -R 671 /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 671 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-rw-rwx--x 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 106 makes new directories 671. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 671 mean?
chmod 671 gives the owner read/write, the group read/write/execute, and everyone else execute. In octal notation, the owner receives 6 (read/write), the group receives 7 (read/write/execute), and others receive 1 (execute).
Is chmod 671 safe?
chmod 671 is classified as Moderate. Every member of the group can modify this file.
What is chmod 671 in symbolic notation?
In symbolic notation, chmod 671 is represented as rw-rwx--x. You can apply this permission using the equivalent symbolic command "chmod u=rw,g=rwx,o=x filename".
Related Permissions
Change one bit: