Chmod Calculator — Linux File Permissions Grid
Instead of memorizing octal codes, check Read, Write, and Execute for Owner, Group, and Public — Dokall instantly shows the octal value, symbolic notation, and a ready-to-paste `chmod` command.
Common presets include 755 for web directories, 644 for files, 600 for SSH keys, and 400 for read-only PEM keys. Edit the filename field to customize the terminal command before copying.