Environment & Shell Customization (Aliases/Functions/.Bashrc)

Stop your shell history from becoming a chaotic mess

🧩 The Challenge

You know that feeling when you hit the up arrow looking for a complex command you ran ten minutes ago, but instead you just see a hundred entries of the same ls command? It drives me absolutely nuts trying to scroll past the junk.

💡 The Fix

By tweaking a few specific variables in your shell config, you can force your history to ignore those repetitive commands and keep a much cleaner, more useful log. You’ll thank yourself the next time you need that one-liner you spent an hour debugging.

HISTCONTROL=ignoreboth:erasedups
HISTSIZE=10000
HISTFILESIZE=20000
shopt -s histappend

⚙️ Why It Works

Setting ignoreboth tells the shell to skip lines starting with a space and duplicates, while erasedups scrubs the existing history file of redundant entries whenever you run a command. Adding histappend ensures that multiple terminal windows don’t overwrite each other’s session data.

🚀 Pro-Tip: Prefix sensitive commands with a single space to keep them out of your history entirely.

Linux Tips & Tricks | © ngelinux.com | 7/25/2026