multithreading - Kill system process in Thread ruby -


how can kill ping (or other longest without timeout , etc system process)(ping - it's simple example) in ruby thread:

a = thread.new     system 'ping localhost' end  a.kill a.exit a.terminate  while true     sleep 5     p a.alive? end

output:=>

ping localhost.localdomain (127.0.0.1) 56(84) bytes of data. 64 bytes localhost.localdomain (127.0.0.1): icmp_req=1 ttl=64 time=0.023 ms .... true 64 bytes localhost.localdomain (127.0.0.1): icmp_req=7 ttl=64 time=0.022 ms ..... true ......

so need stop ping process thread, don't know how it.

system not give pid.

use process::spawn instead. , use process::kill kill process using pid returned process::spawn.

for example:

pid = process.spawn('ping localhost') sleep 3 process.kill(:term, pid) process.wait(pid)

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