Bash Strict Mode Header Generator

Pick set -e, set -u, pipefail, safe IFS, and an error trap - a commented script header explaining what each one actually catches.

set -e (exit on error)set -u (error on unset variables)set -o pipefail (catch failures anywhere in a pipeline)IFS=$'\n\t' (safe word-splitting)trap ERR (print line number on failure)

#!/usr/bin/env bash

# Exit immediately if any command fails, instead of continuing with a partially-completed script.
set -e

# Treat unset variables as an error - catches typos in variable names instead of silently expanding to empty.
set -u

# A pipeline fails if ANY command in it fails, not just the last one - without this, `false | true` exits 0.
set -o pipefail

Was this tool helpful?

See this same kind of analysis applied to your whole repository

Call graphs, dead code, blast radius, and a health score. Results in 60 seconds, free.

Analyze a repository

Related tools

See all Linux tools →

Cron ↔ Natural Language Converter

Cron syntax to plain English, and back.

chmod File Permission Calculator

Pick read/write/execute per owner/group/other - the numeric and symbolic chmod value.

Cron to systemd Timer Converter

Paste a cron expression - the equivalent systemd OnCalendar= line for a .timer unit.

Environment Variable Naming Checker

Check a name against portable POSIX conventions - UPPER_SNAKE_CASE, no hyphens, no leading digit.

Cron Job Builder

Visual picker for the exact crontab line, plus how to install it.

Runs entirely in your browser. Nothing is stored. Free forever.