Parse ps' “etime” output and convert it into seconds

Question

These are possible output formats for ps h -eo etime

21-18:26:30
   15:28:37
      48:14
      00:01

How to parse them into se

Answer 1

Ruby version:

def psETime2Seconds(etime)
  running_secs = 0
  if etime.match(/^(([\d]+)-)?(([\d]+):)?([\d]+):([\d]+)$/)
    running_secs += $2.to_i * 86400 # days
    running_secs += $4.to_i * 3600  # hours
    running_secs += $5.to_i * 60    # minutes
    running_secs += $6.to_i         # seconds
  end
  return running_secs
end