#!/bin/csh
if ( x"$1" == "x-h" ) then
  cat - <<EOF
Syntax: minload [-m alternate_machine_config_file] [-w]
Returns the command prefix needed to run a command on the remote
machine having the minimum load, among the
machines listed in the ~/.machines.rc file
(or as specified by the -m option).
A default ~/.machines.rc file is created the first time
the chl command is run and the file format is described
in the comments therein.
EOF
exit
endif

set machinefile="~/.machines.rc"

while ( $#argv != 0 )
  switch ($1)
    case "-m":
      set machinefile="$2"
      shift
    breaksw
    case "-w":
      set waitforavail
    default:
      break;
    breaksw
  endsw
  shift
end

if ( $?waitforavail ) then
   set waitbetweenpoll=`grep '^set ' $machinefile | getvalue waitbetweenpoll`
   while ( 1 )
     set node=`minload -m $machinefile`
     if ( "$node" != "none" ) break
     sleep $waitbetweenpoll
   end
   echo $node
else
  chl -m $machinefile | sort -r -n | tail -n -1 | sed 's/^[^+]*+//g' | sed 's/^ *//g' | sed 's/ *$//g'
endif