chmod 743 Permission Explained
Summary: chmod 743 gives the owner read/write/execute, the group read, and everyone else write/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 7 | |||
| Group (g) | 4 | |||
| Others (o) | 3 |
chmod 743 filename
chmod 743 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 7 |
rwx |
Full access | Full access: list, enter, create, delete |
| 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 743 Safe?
Critical Risk
- Anyone on the system can modify or replace this file.
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
743 is uncommon in standard Linux setups. The closest widely used permission is chmod 740.
chmod 743 Command Examples
# Apply using octal mode
chmod 743 filename
# Apply using equivalent symbolic mode
chmod u=rwx,g=r,o=wx filename
# Recursive command warning:
chmod -R 743 /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 743 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-rwxr---wx 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 034 makes new directories 743. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 743 mean?
chmod 743 gives the owner read/write/execute, the group read, and everyone else write/execute. In octal notation, the owner receives 7 (read/write/execute), the group receives 4 (read), and others receive 3 (write/execute).
Is chmod 743 safe?
chmod 743 is classified as Critical Risk. Anyone on the system can modify or replace this file.
What is chmod 743 in symbolic notation?
In symbolic notation, chmod 743 is represented as rwxr---wx. You can apply this permission using the equivalent symbolic command "chmod u=rwx,g=r,o=wx filename".
Related Permissions
Change one bit: