Xargs -0 pipes regular enter into only one argument. This argument is passed into the bash executable which sends a "copy to clipboard" request to klipper employing qdbus. The pipe to /dev/null is to not print the newline character returned by qdbus to the console. Rather, recall that linux subsystem https://petskyonline-onlinestrore.blogspot.com/2025/07/the-day-my-cat-got-automatic-feeder-and.html