Lessons
Cmd · Expert
Software / Cmd · expert. Ten practical lessons. Open book. Lesson 1 free.
10 lessons · The Host · Lesson 1 free
Pass all ten lessons for the certificate. Sample · Claim

Lesson 1 · On the house
Batch macros concept
Percent tricks for reusable snippets.

Lesson 2
errorlevel pitfalls
Ambiguity and overwrites.

Lesson 3
Long paths \\?\
Beyond legacy MAX_PATH pain.

Lesson 4
Elevation from scripts
UAC and admin rights.

Lesson 5
Scheduled bat vs pwsh
Choose the task payload wisely.

Lesson 6
Antivirus interaction
Scanners vs scripts and copy storms.

Lesson 7
Codepage traps
When batches misread themselves.

Lesson 8
cmd /c vs /k
Run and leave — or not.

Lesson 9
Embedding PowerShell safely
Avoid injection and escape hell.

Lesson 10
When to stop using cmd
Graduate intentionally.
Sample certificate
Certificate of completion
Sign in to claim your certificate of completion.
Certificate
Finish all ten lessons, then sign in
Pass every lesson on this device (quizzes and checks). Then sign in or create an account to type your name and download the JPG.