alias fs
{
@sec = [$0]
    @sec2 = sec / 60
    if (sec2 > 0)
       {
       @sec3 = sec2 / 60
       if (sec3 > 0)
          {
          @sec4 = sec3 / 24
          if (sec4 > 0)
             {
             @final = [$sec4\d]
             }{@final = [$sec3\h]}
          }{@final = [$sec2\m]}
       }{@final = [$sec\s]}
@function_return = final
}