linux sheel script demo

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demo1 (输入/输出)

1.1. target :

    输入姓、名， 输出姓名

1.2. create directory

     mkdir ~/bin

1.3. create & edit sheel script

    vim fullname.sh

    note:  more comment is useful

#!/bin/bash
#Program
#       User inputs his first name and last name . Program shows his full name.
#History :
#2017/04/10     logan   First lease
PATH=/bin:$PATH #将当前目录加入系统环境
export PATH
read -p "Please input your firstname:" firstname
read -p "Please input your lastname:"   lastname 
echo -e "
Your full name is :" ${firstname} ${lastname}