Your files stay on your device

umask calculator

See what a umask does before you set it: the bits it clears, and the file (0666) and directory (0777) modes that come out. A umask can only remove bits, never grant them.
umaskthree digits, or four with the special digit
 Class read write exec

- chmod and umask are different tools: chmod sets bits on an existing path, umask masks bits at creation time: this page is the mask, the chmod calculator is the set.
Nothing in yet

Paste, drop, or type to begin. Everything stays on this device.

0666 & ~umask for files · 0777 & ~umask for directories

Next door in Config

- chmod calculator (/config/chmod)
- docker run → compose (/config/docker)
- .env editor (/config/env)
All config tools (/config)

Canonical HTML: https://nutter.tools/config/umask
Markdown version: https://nutter.tools/config/umask/index.md
Plain-text version: https://nutter.tools/config/umask/index.txt
Agent index: https://nutter.tools/llms.txt