VAEVICTIS OSLearn
Guides and small tools to practise the basics of Linux before you need them. Try a command here first, then use it on your own PC. Everything runs in your browser: nothing you type leaves the page.
Guides
Tools
CHMOD simulator
Click read, write and execute for owner, group and others, and see the number, the letters and the command.
Open the tool →File system map
Coming from Windows? See where C:\Users, the Registry and your USB sticks are on Linux, and translate common commands.
Open the tool →Password generator
Random passwords made in your browser with the system’s secure random generator, with an honest strength estimate.
Open the tool →Crontab builder
Build a cron schedule field by field, or paste one and read it in plain English.
Open the tool →tar command builder
Create, extract or list archives without remembering the letters: every flag is explained.
Open the tool →SSH server settings
Generate a hardened sshd drop-in file and follow the safe order of steps, so you never lock yourself out.
Open the tool →More pages, guides and quizzes, are being reviewed and moved here.