Linux Internal Process for Cat and Grep [closed]

I’m newbie to linux back round process, for example i have the below linux command, Maybe the question will duplicate here but i couldn’t find answer so posting it.

cat test.txt | grep hello

how many back round process(s) will run? It would be great if insight on this.

Answer

There are two processes: cat and grep.

If you just launch the command line likt that, both processes are not background processes. (I guess you are asking background jobs?)

However, this example is not good, since you can just grep hello test.txt to save one process.

But if you just want to ask the number of processes, it’s fine.