Linux chmod Permissions & Security Matrix

Reference table for Linux & Unix file permissions. Understand octal (755, 644, 600, 777) vs symbolic (rwxr-xr-x) notation, learn what is safe for web servers, and copy quick commands.

Live Interactive Permission Matrix

Linux chmod Calculator & Generator

Octal Value

755

Symbolic

rwxr-xr-x

Quick Presets:

Security Assessment

Status: Elevated

View Full chmod 755 Guide →

Generated Terminal Commands

Target:

chmod 755 deploy.sh

chmod -R 755 /var/www/deploy.sh

Showing 62 of 62 PermissionsClick any permission for recursive commands and deep security breakdown

chmod 755Standard

rwxr-xr-x

Owner has full control (rwx). Group and Everyone else can read and execute (r-x), but cannot modify.

Command:

chmod 755 target_file

chmod 644Standard

rw-r--r--

Owner can read and write (rw-). Group and Everyone else can only read (r--).

Command:

chmod 644 target_file

chmod 777Dangerous

rwxrwxrwx

Full read, write, and execute permissions for EVERYONE on the system.

Command:

chmod 777 target_file

chmod 700Safe

rwx------

Owner has full control (rwx). Group and Others have ZERO permissions (---).

Command:

chmod 700 target_file

chmod 600Safe

rw-------

Owner can read and write (rw-). Group and Others have ZERO access (---).

Command:

chmod 600 target_file

chmod 400Safe

r--------

Owner can ONLY read (r--). Group and Others have ZERO access (---).

Command:

chmod 400 target_file

chmod 775Elevated

rwxrwxr-x

Owner and Group have full control (rwx). Others can read and execute (r-x).

Command:

chmod 775 target_file

chmod 664Standard

rw-rw-r--

Owner and Group can read and write (rw-). Others can only read (r--).

Command:

chmod 664 target_file

chmod 750Safe

rwxr-x---

Owner has full control (rwx). Group can read and execute (r-x). Others have ZERO access (---).

Command:

chmod 750 target_file

chmod 660Elevated

rw-rw----

Owner and Group can read and write (rw-). Others have ZERO permissions (---).

Command:

chmod 660 target_file

chmod 711Elevated

rwx--x--x

Owner has full control (rwx). Group and Others can only traverse/execute (x).

Command:

chmod 711 target_file

chmod 444Safe

r--r--r--

Read-only access for EVERYONE (r--r--r--), including the file owner.

Command:

chmod 444 target_file

chmod 555Safe

r-xr-xr-x

Read and execute for EVERYONE (r-xr-xr-x). NO ONE can write or modify.

Command:

chmod 555 target_file

chmod 666Dangerous

rw-rw-rw-

Read and write for EVERYONE (rw-rw-rw-). No execution rights.

Command:

chmod 666 target_file

chmod 000Safe

---------

NO permissions for ANYONE (---------). Completely inaccessible.

Command:

chmod 000 target_file

chmod 770Elevated

rwxrwx---

Owner has (rwx), Group has (rwx), and Others have (---).

Command:

chmod 770 target_file

chmod 500Safe

r-x------

Owner has (r-x), Group has (---), and Others have (---).

Command:

chmod 500 target_file

chmod 550Safe

r-xr-x---

Owner has (r-x), Group has (r-x), and Others have (---).

Command:

chmod 550 target_file

chmod 640Safe

rw-r-----

Owner has (rw-), Group has (r--), and Others have (---).

Command:

chmod 640 target_file

chmod 744Safe

rwxr--r--

Owner has (rwx), Group has (r--), and Others have (r--).

Command:

chmod 744 target_file

chmod 710Safe

rwx--x---

Owner has (rwx), Group has (--x), and Others have (---).

Command:

chmod 710 target_file

chmod 705Elevated

rwx---r-x

Owner has (rwx), Group has (---), and Others have (r-x).

Command:

chmod 705 target_file

chmod 715Elevated

rwx--xr-x

Owner has (rwx), Group has (--x), and Others have (r-x).

Command:

chmod 715 target_file

chmod 740Safe

rwxr-----

Owner has (rwx), Group has (r--), and Others have (---).

Command:

chmod 740 target_file

chmod 440Safe

r--r-----

Owner has (r--), Group has (r--), and Others have (---).

Command:

chmod 440 target_file

chmod 404Safe

r-----r--

Owner has (r--), Group has (---), and Others have (r--).

Command:

chmod 404 target_file

chmod 450Safe

r--r-x---

Owner has (r--), Group has (r-x), and Others have (---).

Command:

chmod 450 target_file

chmod 455Elevated

r--r-xr-x

Owner has (r--), Group has (r-x), and Others have (r-x).

Command:

chmod 455 target_file

chmod 470Elevated

r--rwx---

Owner has (r--), Group has (rwx), and Others have (---).

Command:

chmod 470 target_file

chmod 475Elevated

r--rwxr-x

Owner has (r--), Group has (rwx), and Others have (r-x).

Command:

chmod 475 target_file

chmod 477Dangerous

r--rwxrwx

Owner has (r--), Group has (rwx), and Others have (rwx).

Command:

chmod 477 target_file

chmod 505Elevated

r-x---r-x

Owner has (r-x), Group has (---), and Others have (r-x).

Command:

chmod 505 target_file

chmod 510Safe

r-x--x---

Owner has (r-x), Group has (--x), and Others have (---).

Command:

chmod 510 target_file

chmod 511Elevated

r-x--x--x

Owner has (r-x), Group has (--x), and Others have (--x).

Command:

chmod 511 target_file

chmod 554Safe

r-xr-xr--

Owner has (r-x), Group has (r-x), and Others have (r--).

Command:

chmod 554 target_file

chmod 575Elevated

r-xrwxr-x

Owner has (r-x), Group has (rwx), and Others have (r-x).

Command:

chmod 575 target_file

chmod 604Safe

rw----r--

Owner has (rw-), Group has (---), and Others have (r--).

Command:

chmod 604 target_file

chmod 645Elevated

rw-r--r-x

Owner has (rw-), Group has (r--), and Others have (r-x).

Command:

chmod 645 target_file

chmod 654Safe

rw-r-xr--

Owner has (rw-), Group has (r-x), and Others have (r--).

Command:

chmod 654 target_file

chmod 655Elevated

rw-r-xr-x

Owner has (rw-), Group has (r-x), and Others have (r-x).

Command:

chmod 655 target_file

chmod 670Elevated

rw-rwx---

Owner has (rw-), Group has (rwx), and Others have (---).

Command:

chmod 670 target_file

chmod 674Elevated

rw-rwxr--

Owner has (rw-), Group has (rwx), and Others have (r--).

Command:

chmod 674 target_file

chmod 675Elevated

rw-rwxr-x

Owner has (rw-), Group has (rwx), and Others have (r-x).

Command:

chmod 675 target_file

chmod 677Dangerous

rw-rwxrwx

Owner has (rw-), Group has (rwx), and Others have (rwx).

Command:

chmod 677 target_file

chmod 701Elevated

rwx-----x

Owner has (rwx), Group has (---), and Others have (--x).

Command:

chmod 701 target_file

chmod 704Safe

rwx---r--

Owner has (rwx), Group has (---), and Others have (r--).

Command:

chmod 704 target_file

chmod 714Safe

rwx--xr--

Owner has (rwx), Group has (--x), and Others have (r--).

Command:

chmod 714 target_file

chmod 720Elevated

rwx-w----

Owner has (rwx), Group has (-w-), and Others have (---).

Command:

chmod 720 target_file

chmod 745Elevated

rwxr--r-x

Owner has (rwx), Group has (r--), and Others have (r-x).

Command:

chmod 745 target_file

chmod 751Elevated

rwxr-x--x

Owner has (rwx), Group has (r-x), and Others have (--x).

Command:

chmod 751 target_file

chmod 752Dangerous

rwxr-x-w-

Owner has (rwx), Group has (r-x), and Others have (-w-).

Command:

chmod 752 target_file

chmod 754Safe

rwxr-xr--

Owner has (rwx), Group has (r-x), and Others have (r--).

Command:

chmod 754 target_file

chmod 760Elevated

rwxrw----

Owner has (rwx), Group has (rw-), and Others have (---).

Command:

chmod 760 target_file

chmod 764Elevated

rwxrw-r--

Owner has (rwx), Group has (rw-), and Others have (r--).

Command:

chmod 764 target_file

chmod 765Elevated

rwxrw-r-x

Owner has (rwx), Group has (rw-), and Others have (r-x).

Command:

chmod 765 target_file

chmod 766Dangerous

rwxrw-rw-

Owner has (rwx), Group has (rw-), and Others have (rw-).

Command:

chmod 766 target_file

chmod 771Elevated

rwxrwx--x

Owner has (rwx), Group has (rwx), and Others have (--x).

Command:

chmod 771 target_file

chmod 772Dangerous

rwxrwx-w-

Owner has (rwx), Group has (rwx), and Others have (-w-).

Command:

chmod 772 target_file

chmod 773Dangerous

rwxrwx-wx

Owner has (rwx), Group has (rwx), and Others have (-wx).

Command:

chmod 773 target_file

chmod 774Elevated

rwxrwxr--

Owner has (rwx), Group has (rwx), and Others have (r--).

Command:

chmod 774 target_file

chmod 776Dangerous

rwxrwxrw-

Owner has (rwx), Group has (rwx), and Others have (rw-).

Command:

chmod 776 target_file

chmod 300Safe

-wx------

Owner has (-wx), Group has (---), and Others have (---).

Command:

chmod 300 target_file