chmod 343 Permission Explained
Summary: chmod 343 gives the owner write/execute, the group read, and everyone else write/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 3 | |||
| Group (g) | 4 | |||
| Others (o) | 3 |
chmod 343 filename
chmod 343 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) | 4 |
r-- |
Read only | Can list names, but not enter |
| Others (o) | 3 |
-wx |
Write and execute | Can enter and create/delete files, but not list |
Is chmod 343 Safe?
Critical Risk
- Anyone on the system can modify or replace this file.
- 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
343 is uncommon in standard Linux setups. The closest widely used permission is chmod 740.
chmod 343 Command Examples
# Apply using octal mode
chmod 343 filename
# Apply using equivalent symbolic mode
chmod u=wx,g=r,o=wx filename
# Recursive command warning:
chmod -R 343 /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 343 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
--wxr---wx 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 434 makes new directories 343. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 343 mean?
chmod 343 gives the owner write/execute, the group read, and everyone else write/execute. In octal notation, the owner receives 3 (write/execute), the group receives 4 (read), and others receive 3 (write/execute).
Is chmod 343 safe?
chmod 343 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 343 in symbolic notation?
In symbolic notation, chmod 343 is represented as -wxr---wx. You can apply this permission using the equivalent symbolic command "chmod u=wx,g=r,o=wx filename".
Related Permissions
Change one bit: