How to wait for process to finish using IO.popen?

Question

I\'m using IO.popen in Ruby to run a series of command line commands in a loop. I then need to run another command outside of the loop. The command outside of t

Answer 1

I suggest you use Thread.join to synchronize the last popen call:

t = Thread.new do
    for foo in bar
       IO.popen(cmd_foo)
    end
end

t.join

IO.popen(another_cmd)