Next Steps with Bash

You can now

• Write and run shebang scripts
• Quote expansions and read arguments safely
• Use if/case/loops and functions
• Handle exit codes, pipes, and redirects
• Enable set -euo pipefail and schedule with cron

Debugging tips

• bash -n script.sh syntax check
• bash -x script.sh trace (watch for secrets)
• Print to stderr for diagnostics
• Test on copies of data, never production first

Where to go next

• BashFAQ and shellcheck for linting
• More getopts / CLI UX
• Process substitution and advanced redirection
• Packaging scripts for teammates
• When to graduate to Python for complex logic

Practice idea

Write a script that backs up a directory with a timestamp, refuses to overwrite, logs results, and runs cleanly under cron.