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 into a terminal, and now it’s sitting in plain text in your .bash_history for any rogue script or curious colleague to find. I’ve wasted way too much time auditing logs just because I typed a flag in the wrong order once.
đź’ˇ The Fix
You can tell your shell to ignore commands that start with a space or match specific patterns, keeping your history file clean of the stuff you definitely don’t want saved. It’s an easy safety net for when you’re moving fast.
export HISTCONTROL=ignorespace:erasedups
export HISTIGNORE='ls:ps:history:pwd:exit:mysql -p*:vault login*'⚙️ Why It Works
Adding a space before a command now keeps it out of the history entirely, while HISTIGNORE lets you define specific patterns that never make it to the disk. These settings effectively turn your history file into a clean record of what actually matters instead of a mess of repetitive junk.
🚀 Pro-Tip: Stick a space in front of your command whenever you’re about to type a password, and your shell will just pretend it never happened.
Linux Tips & Tricks | © ngelinux.com | 7/28/2026