: !/bin/sh



awk -v "xyz=$1" '
function trim(s)
{
	sub(/^[ \t]*|[ \t]*$/,"",s)
	return s
}
BEGIN {
	print "before xyz=[" xyz "]"
	#if ( match(xyz,/^[ \t]*$/) )
	#	print "Blank"
	#else
	#	print "NOT Blank"
	xyz = trim(xyz)
	print " after xyz=[" xyz "]"
	exit
}'