do_square

来自「Advanced Bash&#8722 Scripting Guide An 」· 代码 · 共 14 行

#!/bin/ksh
# Script name: do_square
# Example 10.123

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