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Linux and Bash · Intermediate · 6 h

Bash scripts that fail safely

Strict mode, quoting, arguments, exit codes, traps, arrays and linting with ShellCheck.

Why employers care: A lot of operations automation is Bash. Scripts that break on a space in a file name, or carry on after an error, cause real outages.

In the roadmaps for: DevOps / Platform Engineer, Cloud and Network Engineer, Cybersecurity Engineer

Lessons, in order

  1. A backup script that fails safelyWrite a Bash script with strict mode, validated arguments, meaningful exit codes, a cleanup trap and file names with spaces, and lint it with ShellCheck.4 min