ShellPer — Linux Command Guide

Aug 31, 2026

This release turns ShellPer from a dictionary into a practice app.

• THE LAB — 10 scripted missions on a simulated Linux box. Real shell, real error messages.

• DAILY PUZZLE — one task a day, the same for everyone. Free.

• PASTE & UNDERSTAND — takes a command apart and checks it against 31 danger rules.

• 26 PLAYBOOKS — from symptom to fix, step by step.

• Permission, cron and distro converters.

• The command library grew from 90 to 358.

• Search now handles typos and partial words.