Interactive, client-side tools for Linux and DevOps work: permission calculators, subnet planners, cron expression builders, and more. Calculations run locally in your browser.
Build a systemd service file online, choose common service and restart settings, then download the unit and copy the commands needed to install and test it.
Interactive find command builder. Set a name pattern, type, size, modification time, or permissions, and copy a working command with every argument explained.
Interactive rsync command builder. Pick the flags you need, add excludes, an SSH port, or a bandwidth limit, and copy the exact rsync command with an explanation of every option.
Build cron expressions with presets and field controls, or paste a crontab schedule to see its plain-English meaning and next five run times.
Interactive IPv4 subnet and CIDR calculator. Enter a network in CIDR notation to get the network and broadcast address, usable host range, netmask, wildcard mask, and a binary bit view.
Interactive chmod permission calculator. Toggle read, write, and execute bits to get the octal and symbolic notation, plus the exact chmod command to run.