Environment & Shell Customization (Aliases/Functions/.Bashrc)
Stop your shell history from leaking sensitive secrets
🧩 The Challenge
Everyone has accidentally typed a database password or an API key directly into the terminal while rushing. It sits there in your .bash_history forever, waiting for the next auditor or script to stumble across it.
đź’ˇ The Fix
You can make your shell ignore specific commands that start with a space, so they never get written to the history file at all. It keeps your logs clean without changing how you actually work.
export HISTCONTROL=ignorespace⚙️ Why It Works
Setting this environment variable means that if you type a space before your command, bash assumes you want to keep that line out of the history list entirely. It’s a lifesaver when you realize mid-command that you’re about to paste a credential.
🚀 Pro-Tip: Put a space before your `mysql` login and you’ll never have to worry about cleaning your history file again.
Linux Tips & Tricks | © ngelinux.com | 10/29/2026