#! /bin/tcsh -f

set FILE = ${1}
set firstLine = ${2}
set lastLine = ${3}

#echo $FILE
#echo $firstLine
#echo $lastLine

set nl = `wc -l $FILE | awk '{print $1}'`
if ( $lastLine == "end" ) then
	set lastLine = $nl
endif

if ( $nl >= $lastLine ) then
	@ numLinesToExtract = ($lastLine - $firstLine) + 1
else
	@ numLinesToExtract = ($nl - $firstLine) + 1
endif

#echo $nl

#echo $numLinesToExtract

#Num of lines starting from firstline to the end nl-firstline+1
@ numLinesFromFirst = ($nl - $firstLine) + 1 

#echo $numLinesFromFirst

#extract the lines starting with the first to the end of file

set TMP = /tmp/FILE$$

tail -n $numLinesFromFirst $FILE > $TMP

# now extract the rest
head -n $numLinesToExtract $TMP

rm -f $TMP
exit