Processing Standard Input (Pipe) as Variables Using Bash xargs Command

In Bash, the Linux command line language, we’ll process standard input (stdin, pipe) as variables using the Bash xargs command.

ASUS:/mnt/c/pg/$ seq 1 3 | xargs -I {} bash -c "echo {} && echo {}"
1
1
2
2
3
3

# or..
$ seq 1 3 | xargs -I {} echo {} {}

How to repeat variables twice in xargs - Unix & Linux Stack Exchange