chmod 225 Permission Explained

Notice: This is an unusual permission set: some classes have more access than the class above them. It is rarely correct in practice.

Octal

225

Symbolic

-w--w-r-x

Binary

010 010 101

Risk Level

Moderate

Summary: chmod 225 gives the owner write, the group write, and everyone else read/execute.

Class	Read (4)	Write (2)	Execute (1)	Octal
Owner (u)				2
Group (g)				2
Others (o)				5

setuid (4) setgid (2) sticky bit (1)

Octal

Symbolic

Target File / Path

-R Recursive -v Verbose

225

-w--w-r-x

Owner: write · Group: write · Others: read/execute

chmod 225 filename

Moderate Every member of the group can modify this file.

View the full chmod 225 guide →

chmod 225 Breakdown

Class	Digit	Symbolic	On a file	On a directory
Owner (u)	`2`	`-w-`	Write only (rarely useful)	No practical effect without x
Group (g)	`2`	`-w-`	Write only (rarely useful)	No practical effect without x
Others (o)	`5`	`r-x`	Read and execute	Can list and enter

Is chmod 225 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

225 is uncommon in standard Linux setups. The closest widely used permission is chmod 664.

chmod 225 Command Examples

# Apply using octal mode
chmod 225 filename

# Apply using equivalent symbolic mode
chmod u=w,g=w,o=rx filename

# Recursive command warning:
chmod -R 225 /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 225 {} +

# Verify permissions
stat -c '%a %A %n' filename    # Linux
stat -f '%Lp %Sp %N' filename   # macOS

# Example ls -l output:
--w--w-r-x 1 alice staff 1024 Jan 15 10:00 example.txt

umask Relationship

A umask of 552 makes new directories 225. Test umask values with our interactive Umask Calculator.

Frequently Asked Questions

What does chmod 225 mean?

chmod 225 gives the owner write, the group write, and everyone else read/execute. In octal notation, the owner receives 2 (write), the group receives 2 (write), and others receive 5 (read/execute).

Is chmod 225 safe?

chmod 225 is classified as Moderate. Every member of the group can modify this file.

What is chmod 225 in symbolic notation?

In symbolic notation, chmod 225 is represented as -w--w-r-x. You can apply this permission using the equivalent symbolic command "chmod u=w,g=w,o=rx filename".

Related Permissions

Change one bit:

chmod 625 add owner read chmod 025 remove owner write chmod 325 add owner execute chmod 265 add group read chmod 205 remove group write chmod 235 add group execute chmod 221 remove others read chmod 227 add others write chmod 224 remove others execute

← chmod 224 chmod 226 →

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