Ravindra BagaleCourses & study guides

Chapter 5: Bash Scripting for Automation

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Chala mitrano, aaj aapan Bash scripting shikuya. Dar sakali don-das commands type karnyachi paddhat sodun, ek script — health check, pull, restart. Shebang, variables, quotes, exit codes, if / loops, thodi idempotent habit, cron, aani secrets hardcode nahi. Ghabru naka: pahili script short theva; perfect poetry nahi — clear aani safe.

What you will learn in this chapter

  • Shebang, variables, quotes, exit codes
  • if and loops for health checks
  • Check-before-install script habits
  • Cron basics and PATH pitfalls
  • Keep secrets out of scripts

Concepts in this chapter

  1. 5.1Why script — the morning ten commands
  2. 5.2Shebang, permissions, first script
  3. 5.3Variables, quotes and exit codes
  4. 5.4if and loops for health checks
  5. 5.5Idempotent-ish habits — check before install
  6. 5.6Cron basics — schedule the script
  7. 5.7Secrets — never hardcode
  8. 5.8Reading arguments and a full sample script
  9. 5.9Functions — keep scripts readable
  10. 5.10Debugging scripts without guessing
  11. 5.11Lab — health check script with dry-run

The chapter recap is at the end of the last concept page.