Shell Script · Best Practices

Shell Scripting Best Practices & Interview Tips

Best Practices

  • Always use #!/bin/bash at top
  • Use set -euo pipefail for safety
  • Quote variables to prevent word splitting
  • Use functions for reuse
  • Add comments for clarity

Interview Tips

  • Explain difference between $@ and $*
  • Explain exit status and signals
  • Write a backup or monitoring script live
  • Explain crontab scheduling
  • Understand debugging with set -x