chmod 435 Permission Explained
Summary: chmod 435 gives the owner read, the group write/execute, and everyone else read/execute.
| Class | Read (4) | Write (2) | Execute (1) | Octal |
|---|---|---|---|---|
| Owner (u) | 4 | |||
| Group (g) | 3 | |||
| Others (o) | 5 |
chmod 435 filename
chmod 435 Breakdown
| Class | Digit | Symbolic | On a file | On a directory |
|---|---|---|---|---|
| Owner (u) | 4 |
r-- |
Read only | Can list names, but not enter |
| Group (g) | 3 |
-wx |
Write and execute | Can enter and create/delete files, but not list |
| Others (o) | 5 |
r-x |
Read and execute | Can list and enter |
Is chmod 435 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.
- Even the owner cannot modify this file without changing permissions first.
- Unusual: a lower class has permissions the class above it lacks.
Common Use Cases
435 is uncommon in standard Linux setups. The closest widely used permission is chmod 775.
chmod 435 Command Examples
# Apply using octal mode
chmod 435 filename
# Apply using equivalent symbolic mode
chmod u=r,g=wx,o=rx filename
# Recursive command warning:
chmod -R 435 /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 435 {} +
# Verify permissions
stat -c '%a %A %n' filename # Linux
stat -f '%Lp %Sp %N' filename # macOS
# Example ls -l output:
-r---wxr-x 1 alice staff 1024 Jan 15 10:00 example.txtumask Relationship
A umask of 342 makes new directories 435. Test umask values with our interactive Umask Calculator.
Frequently Asked Questions
What does chmod 435 mean?
chmod 435 gives the owner read, the group write/execute, and everyone else read/execute. In octal notation, the owner receives 4 (read), the group receives 3 (write/execute), and others receive 5 (read/execute).
Is chmod 435 safe?
chmod 435 is classified as Moderate. Every member of the group can modify this file.
What is chmod 435 in symbolic notation?
In symbolic notation, chmod 435 is represented as r---wxr-x. You can apply this permission using the equivalent symbolic command "chmod u=r,g=wx,o=rx filename".
Related Permissions
Change one bit: