Home News Removing duplicate lines with awk ‘!visited[$0]++’ explained By Lazarus Lazaridis June 6, 2019 How to remove duplicate lines of a file in Linux without sorting or changing their order (awk one-liner explained). Complete Story Facebook Twitter Linkedin Email Print Previous articleUbuntu 14.04 LTS has Officially Transitioned to Extended Security Maintenance (ESM) Support Phase Next articleHow to reset Ubuntu Get the Free Newsletter! Subscribe to Developer Insider for top news, trends, & analysis Email Address By subscribing, you agree to our Terms of Use and Privacy Policy. Subscribe Must Read Developer How to Install Gitea DevOps Platform using Docker on Debian 12 Blog 15 Best Free and Open-Source Linux File Managers Blog How to Install HandBrake on Ubuntu and Linux Mint Security How to Install Bitwarden on Manjaro Developer How to Install Apache Spark on Ubuntu 22.04