chmod 464 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

464

Symbolic

r--rw-r--

Binary

100 110 100

Risk Level

Moderate

Summary: chmod 464 gives the owner read, the group read/write, and everyone else read.

Class	Read (4)	Write (2)	Execute (1)	Octal
Owner (u)				4
Group (g)				6
Others (o)				4

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

Octal

Symbolic

Target File / Path

-R Recursive -v Verbose

464

r--rw-r--

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

chmod 464 filename

Moderate Every member of the group can modify this file.

View the full chmod 464 guide →

chmod 464 Breakdown

Class	Digit	Symbolic	On a file	On a directory
Owner (u)	`4`	`r--`	Read only	Can list names, but not enter
Group (g)	`6`	`rw-`	Read and write	Can list names, cannot enter
Others (o)	`4`	`r--`	Read only	Can list names, but not enter

Is chmod 464 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

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

chmod 464 Command Examples

# Apply using octal mode
chmod 464 filename

# Apply using equivalent symbolic mode
chmod u=r,g=rw,o=r filename

# Recursive command warning:
chmod -R 464 /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 464 {} +

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

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

umask Relationship

A umask of 313 makes new directories 464 and new files 464. Test umask values with our interactive Umask Calculator.

Frequently Asked Questions

What does chmod 464 mean?

chmod 464 gives the owner read, the group read/write, and everyone else read. In octal notation, the owner receives 4 (read), the group receives 6 (read/write), and others receive 4 (read).

Is chmod 464 safe?

chmod 464 is classified as Moderate. Every member of the group can modify this file.

What is chmod 464 in symbolic notation?

In symbolic notation, chmod 464 is represented as r--rw-r--. You can apply this permission using the equivalent symbolic command "chmod u=r,g=rw,o=r filename".

Related Permissions

Change one bit:

chmod 064 remove owner read chmod 664 add owner write chmod 564 add owner execute chmod 424 remove group read chmod 444 remove group write chmod 474 add group execute chmod 460 remove others read chmod 466 add others write chmod 465 add others execute

← chmod 463 chmod 465 →

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