如何在从终端执行C程序的同时运行终端命令

Question

I have a C program executable. I will run a terminal command at the same time as I run the program and wonder how I would do that?

./program | ps -l -u ${USER} | grep info

I put in my username for USER but I get:

Usage: ps [options]

Try 'ps --help ' or 'ps --help ' for additional help text.

For more details see ps(1).

Don't know what I do wrong?

Answer 1

如标题中所述回答您要运行的问题

./program & ps ...

Answer 2

You probably want to run your ./program in the background as you grep the output from ps :

./program & ps -l -u ${USER} | grep info

the & puts ./program in the background where as | is used to pipe the output of one command to another