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“Great logs don't just tell you what went wrong — they help you understand why it happened.” Whether you're automating a deployment or writing a bash script to clean up temp files, there's one thing your future self will always thank you for: clear, timestamped, consistent logging. Why Even Bother With Logging? Shell scripts often get the job done fast — but when they go wrong, debugging them can feel like trying to read hieroglyphics in the dark. Logging provides a flashlight. It tells you what ran, when it ran, and how it ran — especially when you're not watching. This post walks you through a compact, reusable logger function for your shell scripts that: Categorizes messages by severity (INFO, DEBUG, ERROR, etc.) Automatically timestamps log entries Writes to a dedicated log file
“Great logs don't just tell you what went wrong — they help you understand why it happened.”
Whether you're automating a deployment or writing a bash script to clean up temp files, there's one thing your future self will always thank you for: clear, timestamped, consistent logging.
Why Even Bother With Logging?
Shell scripts often get the job done fast — but when they go wrong, debugging them can feel like trying to read hieroglyphics in the dark. Logging provides a flashlight. It tells you what ran, when it ran, and how it ran — especially when you're not watching.
This post walks you through a compact, reusable logger function for your shell scripts that:
- Categorizes messages by severity (INFO, DEBUG, ERROR, etc.)
- Automatically timestamps log entries
- Writes to a dedicated log file
