chmod 571 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

571

Symbolic

r-xrwx--x

Binary

101 111 001

Risk Level

Moderate

Summary: chmod 571 gives the owner read/execute, the group read/write/execute, and everyone else execute.

Class	Read (4)	Write (2)	Execute (1)	Octal
Owner (u)				5
Group (g)				7
Others (o)				1

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

Octal

Symbolic

Target File / Path

-R Recursive -v Verbose

571

r-xrwx--x

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

chmod 571 filename

Moderate Every member of the group can modify this file.

View the full chmod 571 guide →

chmod 571 Breakdown

Class	Digit	Symbolic	On a file	On a directory
Owner (u)	`5`	`r-x`	Read and execute	Can list and enter
Group (g)	`7`	`rwx`	Full access	Full access: list, enter, create, delete
Others (o)	`1`	`--x`	Execute only	Can enter (cd) but not list contents

Is chmod 571 Safe?

Moderate

Every member of the group can modify this file.
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

571 is uncommon in standard Linux setups. The closest widely used permission is chmod 775.

chmod 571 Command Examples

# Apply using octal mode
chmod 571 filename

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

# Recursive command warning:
chmod -R 571 /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 571 {} +

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

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

umask Relationship

A umask of 206 makes new directories 571. Test umask values with our interactive Umask Calculator.

Frequently Asked Questions

What does chmod 571 mean?

chmod 571 gives the owner read/execute, the group read/write/execute, and everyone else execute. In octal notation, the owner receives 5 (read/execute), the group receives 7 (read/write/execute), and others receive 1 (execute).

Is chmod 571 safe?

chmod 571 is classified as Moderate. Every member of the group can modify this file.

What is chmod 571 in symbolic notation?

In symbolic notation, chmod 571 is represented as r-xrwx--x. You can apply this permission using the equivalent symbolic command "chmod u=rx,g=rwx,o=x filename".