my_star/sbin/listMaker.csh

#!/bin/csh


# initial variables
set maxFiles = 20
set listDummy = "list_"
#


# main code

set counter = 0
set listCounter = 0

set ListFile = "${listDummy}${listCounter}.list"
touch $ListFile
foreach line ( `cat $1` )
    
    @ counter += 1
   
    if ($counter == $maxFiles) then
        @ listCounter += 1
        set ListFile = "${listDummy}${listCounter}.list"
        touch $ListFile
        set counter = 0
    endif
    echo $line >> $ListFile
end