Chmod 600 - rw------- Permission Breakdown
Chmod 600 equals rw------- in symbolic notation. Owner read/write only; no group or world access. Use case: Private keys, .env files, and sensitive credentials. Toggle bits below, see security warnings, and copy chmod 600 commands for your path.
Permission bits
| Role | Read (r) | Write (w) | Execute (x) |
|---|---|---|---|
| Owner (u) | |||
| Group (g) | |||
| Others (o) |
Octal
600
Symbolic
rw-------
Execute (x) lets the owner run this file as a program or script.
Commands
chmod 600 filenamechmod u=rw-,g=---,o=--- filenameCommon presets
How to run chmod 600
Check current permissions with ls -l path, apply chmod 600 path, then
verify again. Symbolic form: rw-------
. Typical use: Private keys, .env files, and sensitive credentials.
ls -l your-file- note the current modechmod 600 your-file- apply this models -l your-file- confirm the change
chmod 600 bit breakdown
| Role | Octal digit | Symbolic |
|---|---|---|
| Owner | 6 | rw- |
| Group | 0 | --- |
| Others | 0 | --- |
Chmod 600 FAQ
What does chmod 600 mean?
Octal 600 maps to rw-------. Owner read/write only; no group or world access. Typical use: Private keys, .env files, and sensitive credentials. Each digit encodes owner, group, and others permissions using read=4, write=2, execute=1.
What is rw------- in octal?
Symbolic rw------- converts to octal 600. Owner digits come first, then group, then others. This page loads the calculator with 600 pre-selected so you can inspect or tweak individual bits.
When should I use chmod 600?
Private keys, .env files, and sensitive credentials Always verify against your deployment checklist and security policy.
How do I run chmod 600 in the terminal?
Execute chmod 600 path/to/file for a single file, or chmod 600 -R directory/ recursively. Confirm the path first - recursive chmod on the wrong folder is difficult to undo. Copy the command from the calculator output above.
Chmod 600 vs ls -l output: how do they relate?
ls -l shows symbolic permissions on the left (e.g., rw-------) and may omit octal. This calculator bridges both views. Compare the symbolic string character-by-character with ls -l.
Where is the full chmod calculator?
The main Chmod Calculator supports any 3-digit octal value and interactive rwx toggles. Visit /dev-tools/chmod-calculator/ for the complete tool with methodology and related Dev Tools links.
Sources & review
Last reviewed: