If you see xxd: command not found , you aren't just missing a tool; you are missing a piece of computing history that is often "hidden" inside another famous piece of software. 🔍 The Direct Answer
whereis xxd
# or
find /usr -name xxd 2>/dev/null
cat /etc/os-release # Most Linux distros
uname -a # General OS info
which vim # Check if Vim is installed
sudo apt update
sudo apt install vim-common
sudo yum install vim-common
sudo apk add xxd
choco install xxd
sudo pacman -S vim