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, so you can rebuild the mode from individual rwx bits when auditing a deployment or fixing a broken upload script.
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 and copy a ready chmod command for your path before you deploy.
When should I use chmod 600?
Private keys, .env files, and sensitive credentials Always verify against your deployment checklist and security policy before applying the mode recursively in production. Use the calculator above to preview symbolic notation and warnings, then copy the exact chmod command for your path.
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, then re-run ls -l to confirm rw-------.
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. Match every rwx character before you ship.
Where is the full chmod calculator?
The main Chmod Calculator supports any 3-digit octal value and interactive rwx toggles with live security warnings. Visit /dev-tools/chmod-calculator/ for the complete tool with methodology, related modes, and Dev Tools cross-links when you need a mode outside this named preset page.
Sources & review
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