do_square

来自「UNIX+shell范例精解（第4版）代码」· 代码 · 共 12 行

# Scriptname: do_square
#!/bin/ksh
function square {
 (( sq = $1 * $1 ))
	print "Number to be squared is $1."
	print "The result is $sq "
}

read number?"Give me a number to square. "
value_returned=$(square $number)
print $value_returned