BASH 也做浮点运算

BASH 中的运算只限于整数，要进行浮点运算的话，需要借助其他的程序，如 bc，awk，perl。

#!/bin/bash

#===============================================================================

#

# FILE: arithmetic.sh

#

# USAGE: ./arithmetic.sh

#

# DESCRIPTION:

#

# OPTIONS: ---

# REQUIREMENTS: ---

# BUGS: ---

# NOTES: ---

# AUTHOR: huys (), [e-mail]

# COMPANY: HUYS .Inc

# VERSION: 1.0

# CREATED: 11/03/2008 01:39:05 PM CST

# REVISION: ---

#===============================================================================


sum=92.1
count=8

result=`perl -e "print $sum/$count"`
echo $result

result2=`echo $sum/$count | bc -l`
echo $result2

exit 0