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

Stop bash history from being a total mess of duplicates

🧩 The Challenge

You press the up arrow a dozen times only to see the same command repeated over and over because you ran it three times in a row. It makes cycling through your actual work history feel like pulling teeth.

💡 The Fix

Change your bash history control settings so it ignores redundant commands and clears out space for stuff you actually want to find again. It turns a chaotic log into a clean searchable list.

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

⚙️ Why It Works

Setting these variables tells bash to strip out consecutive identical commands and append new entries to the history file rather than overwriting it entirely. You’ll spend way less time tapping the arrow keys like a maniac.

🚀 Pro-Tip: Add a timestamp to your history too so you can actually remember when you broke production.

Linux Tips & Tricks | © ngelinux.com | 9/3/2026