Lessons
Bash · Easy
Bash · Easy. Ten lessons. Open-book quizzes. Lesson 1 free.
10 lessons · The Host · Lesson 1 free
Pass all ten lessons for the certificate. Sample · Claim

Lesson 1 · On the house
functions
name() { ...; }

Lesson 2
arrays
Bash arrays.

Lesson 3
globbing
Filename patterns.

Lesson 4
command substitution
$(...)

Lesson 5
set -euo pipefail
Strict mode sketch.

Lesson 6
case statements
Pattern branches.

Lesson 7
here documents
<<EOF

Lesson 8
grep and friends
Filter lines.

Lesson 9
find basics
Walk a tree.

Lesson 10
Easy capstone
Safe arg loop.
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