Method: ProcessTree.child_pids_of

Defined in:
lib/clarity/process_tree.rb

.child_pids_of(ppid) ⇒ Object 



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# File 'lib/clarity/process_tree.rb', line 11

def self.child_pids_of(ppid)
  out = `ps -opid,ppid | grep #{ppid.to_s}`
  ids = out.split("\n").map {|line| $1 if line =~ /^\s*([0-9]+)\s.*/ }.compact
  ids.delete(ppid.to_s)
  if ids.empty?
    ids
  else
    ids << ids.map {|id| child_pids_of(id) }
  end
end