chmod 674 Permission Explained
Summary: chmod 674 gives the owner read/write, the group read/write/execute, and everyone else read.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 6 | |||
| Group (g) | 7 | |||
| Others (o) | 4 |
chmod 674 filename
chmod 674 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) | 4 |
r-- |
Read only | Can list names, but not enter |
Is chmod 674 Safe?
Moderate
- Every member of the group can modify 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
674 is uncommon in standard Linux setups. The closest widely used permission is chmod 664.
chmod 674 Command Examples
# Apply using octal mode
chmod 674 filename
# Apply using equivalent symbolic mode
chmod u=rw,g=rwx,o=r filename
# Recursive command warning:
chmod -R 674 /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 674 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-rw-rwxr-- 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 103 makes new directories 674. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 674 mean?
chmod 674 gives the owner read/write, the group read/write/execute, and everyone else read. In octal notation, the owner receives 6 (read/write), the group receives 7 (read/write/execute), and others receive 4 (read).
Is chmod 674 safe?
chmod 674 is classified as Moderate. Every member of the group can modify this file.
What is chmod 674 in symbolic notation?
In symbolic notation, chmod 674 is represented as rw-rwxr--. You can apply this permission using the equivalent symbolic command "chmod u=rw,g=rwx,o=r filename".
Related Permissions
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