[Shell]输入參数

获取shell脚本的输入參数,而且推断得到的參数。


#!/bin/bash
#title: testPT.sh
#atuhor: orangleliu
#date: 2014-08-08
#desc: 输入2个參数,第二个位数字,假设正确就打印出来,错误提示出来

#=====================
#Function  Check
#=====================
Check()
{
if [ $# -ne 2 ]   #charge params num
then 
	echo "You must input two params"
	return 1
else
	all="$@" #get all input value
	secd=`echo $all|awk '{print $2}'`
	expr 1 + $secd > /dev/null 2>&1
	if [ $? -eq 0 ]
	then 
		echo "$all"
	else
		echo "Sorry age is a number" 
		return 1
	fi
fi
}

#===================
#Function main()
#==================
Main()
{
Check $1 $2
	if [ $? -eq 1 ]
	then 
		exit
	fi
}

Main $1 $2

运行结果


[orangle@localhost shell]$ bash testPT.sh 
You must input two params
[orangle@localhost shell]$ bash testPT.sh orangle 13
orangle 13
[orangle@localhost shell]$ bash testPT.sh orangle lzz
Sorry age is a number


tips:

if两边一定要有空格,if中的符号使用 

变量复制的时候,= 两边不要有空格


參考教程


本文出自 orangleliu笔记本 博客,请务必保留此出处http://blog.csdn.net/orangleliu/article/details/38449559

原文地址:https://www.cnblogs.com/mfrbuaa/p/4191728.html