#/bin/tcsh 

switch ($#argv) 

  case 0 : 

    set d = `date` 

    cal $d[6] 

    breaksw 

 case 1 : 

    cal $1 

    breaksw 

  case 2 : 

    cal $1 $2 

    breaksw 

  case 3 : 

    cal $1 $3 

    cal $2 $3 

    breaksw 

  default  

    echo trop de parametres  

endsw