Bash Strict Mode & Boilerplate Generator

Writing shell scripts is easy, but writing robust, production-ready shell scripts that fail gracefully and clean up after themselves is notoriously difficult.

Use this interactive generator to configure best-practice parameters and compile a boilerplate template with safety flags, lockfiles, temporary files, and argument parsing.

Interactive Bash Boilerplate Builder

Toggle script features on the right to compile your customized bash shell template on the left.

[ GENERATED SHELL TEMPLATE ]

[ BOILERPLATE CONFIGURATION ]

Strict Mode & Options:

Strict Mode (set -euo pipefail) Pin script path (Run from own folder)

Safeguards & Signals:

Cleanup Trap (Auto-delete temp files on exit) Mutex Lockfile (Prevent overlapping runs)

Features & Boilerplates:

Colored Log Helpers (info/warn/error) Argument Parsing (getopts framework)

--- ### Key Safeguard Explanations * **`set -e` (Exit on Error):** Tells bash to immediately exit if any command fails. Avoids cascading errors where a failed command causes later commands to operate on incorrect states. * **`set -u` (Exit on Unset Variable):** Treats unset variables as an error. Prevents catastrophic accidents like `rm -rf $MY_VAR/` running as `rm -rf /` if `$MY_VAR` is undefined. * **`set -o pipefail` (Catch Pipe Failures):** Ensures that if any command in a pipeline fails (e.g. `grep | awk`), the exit code of the entire pipeline matches the failed command, not the last one. * **`trap cleanup EXIT` (Signal Trap):** Registers a function to run whenever the script exits (normal completion, error, or manual interrupts like Ctrl+C). Ideal for deleting scratch files or releasing mutex locks.