Home News Removing duplicate lines with awk ‘!visited[$0]++’ explained By Lazarus Lazaridis June 7, 2019 How to remove duplicate lines of a file in Linux without sorting or changing their order (awk one-liner explained). Facebook Twitter Linkedin Email Print 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 Blog 17 Useful Free and Open Source PDF Tools Blog Zenith – Turbo-Charged top Utility Blog How to Install Pydio Cells on Ubuntu 24.04 Blog How to Install Odoo 18 on Ubuntu 24.04 Blog 11 Best Free and Open Source GUI Weather Tools