bash script starting multiple process problem

I am trying to write a script that process a sequence job like:

compile project A

start program A

compile proje开发者_运维知识库ct B

then start program B

it works fine ,but the problem is when I run the script it compile A works fine then start program A is fine too ,then stopped, when I close program A then program B starts .. how to run them in the same time?

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If you put an '&' at the end of the line where you start program A, that should do the trick.

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From your question I'm not totally sure which activities you want to run concurrently, but you can put programs in the background using the & operator:

program_a &