CODEWITHSUNDEEP
rubysh
Vighnesh Pai
Vighnesh Pai

Reputation: 1843

Ruby exucution stuck at system() line

This is my code snippet

def execution_start
  puts "About to start"
  system("appium")
  puts "Done!!"
end

When executing this I see the output About to start, and appium server is launched. But after that, I do not see anything happening. It's stuck forever. Any idea?

Upvotes: 1

Views: 43

Answers (1)

Linuxios
Linuxios

Reputation: 35803

system blocks until the command it runs has completed. To run a command and return immediately, use Process#spawn:

def execution_start
  puts "About to start"
  pid = Process.spawn("appium")
  puts "Done!!"
end

You can then use the returned PID to monitor whether the process has finished executing, and with what exit code, later in your program.

(Note that, per the documentation, you need to Process#wait the PID eventually, or at least register disinterest using Process#detach to prevent the subprocess from becoming a zombie.)

Upvotes: 5

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