ruby列表儿童痘痘

Process.pid

详见http://whynotwiki.com/Ruby_/_Process_management.

然后,您可以使用特定于操作的命令来获取子代码.在基于unix的系统上,这将是一些事情

# Creating 3 child processes.
IO.popen('uname')
IO.popen('uname')
IO.popen('uname')

# Grabbing the pid.
pid = Process.pid

# Get the child pids.
pipe = IO.popen("ps -ef | grep #{pid}")

child_pids = pipe.readlines.map do |line|
  parts = line.split(/s+/)
  parts[2] if parts[3] == pid.to_s and parts[2] != pipe.pid.to_s
end.compact

# Show the child processes.
puts child_pids

我承认这可能不适用于所有unix系统,因为我相信ps -ef的输出在不同的unix风格上略有不同.