Library › Book 19 › Bash Scripting for QA
Bash Scripting for QA
6.1🔒Why QA Engineers Write ScriptsBash scripts automate repetitive QA tasks: health-checking environments, setting up test data, running smoke tests, analyzing logs, and…
6.2🔒Script Structure and Best PracticesEvery Bash script should start with a consistent structure:
6.3🔒VariablesCommon Mistake: Putting spaces around = in variable assignment. NAME = "QA" does NOT assign a variable -- it tries to run a command called…
6.4🔒Control Flow
6.5🔒FunctionsPro Tip: Always use local for variables inside functions. Without it, variables are global by default, and one function can accidentally…
6.6🔒Practical Script: Smoke Test Multiple Environments
6.7🔒Practical Script: Wait for Service ReadinessThis pattern is essential in CI/CD: wait for a service to be ready before running tests against it.
6.8🔒Practical Script: Test Data Cleanup
6.9🔒Error Handling with TrapsThe trap command ensures cleanup code runs no matter how the script exits -- normal completion, error, or Ctrl+C interruption. This is…
6.10🔒Script Best Practices SummaryPro Tip: Install and use shellcheck. It is a linter for shell scripts that catches hundreds of common mistakes: unquoted variables, missing…
6.11🔒Exercises50. Write a script that takes a name as an argument and prints "Hello, <name>! Today is <date>." 51. Write a script that checks if a file…
6.12🔒Career Translation- Automated QA environment setup, health checking, and test data cleanup with Bash scripts, reducing manual pre-test preparation from 20…
6.13🔒Q&AInterview Depth CheckPrompt: You need to write a Bash script that starts a Docker Compose test environment, waits for all services to be healthy, runs the test…