convnotrunc

Welcome to our Linux Bash series where we delve into some of the less explored, but incredibly powerful capabilities of bash command-line utilities. Today, we will focus on a compelling feature of the dd command – overwriting a part of a file in-place using the conv=notrunc option without truncating the entire file. Q: What exactly is the dd command in Linux? A: The dd command in Linux stands for "data duplicator". It is used for copying and transforming files at a low level. You can copy entire hard drive contents to another, create a bootable USB drive from an ISO file, or perform direct memory access operations, among other things.