Bash Core
Core for Bash: Works in it, has gaps.
Who it is for
Works in it, has gaps.
The behaviour people get wrong after they are already productive in the language.
You will get the most out of it if you have written Bash recently enough to read it without effort, and have been surprised by it at least once. If you are picking the language up for the first time, start with Bash Essentials and come back to this one.
How long it takes
Planned at 90 graded questions, which is about 68 minutes of answering and roughly 18 days at five a day.
Nothing ships until every runnable snippet in it has been executed and matched against its answer.
Syllabus
What you will be asked about
This course is in production
It is planned as ten topics of ten questions, the same shape as every other course in the catalogue: one concept card, six multiple-choice questions, one predict-the-output, one ordering task and one matching task per topic. The topics themselves are mined from Bash Reference Manual and POSIX shell specification, and nothing is listed here until the questions exist and have been executed — a syllabus written before the content is a promise, and this page only carries facts.
Free and paid courses are decided per course, not per language, and this one will be included in a subscription.
The rest of the track
Bash at every depth
Bash Essentials
Essentials for Bash: Knows the syntax, not yet the behaviour.
Bash Data & Collections
Data & Collections for Bash: Comfortable, but surprised by how containers behave.
Bash Errors & Edge Cases
Errors & Edge Cases for Bash: Writes the happy path well.
Bash Standard Library
Standard Library for Bash: Reaches for a dependency before the built-in.
Bash Idioms & Pitfalls
Idioms & Pitfalls for Bash: Fluent, writes it like another language.
Bash Advanced
Advanced for Bash: Confident; wants the traps.
Bash Performance
Performance for Bash: Has never measured anything.
Bash Testing
Testing for Bash: Tests the code they wrote, not the code they meant.
Bash Interview Questions
Interview Questions for Bash: Preparing, and short of time.
Bash Core is being written
Start with what is already live.
Every track that is already live works the same way: five questions a day, mixed across the courses you have enrolled in.
Browse the catalogue