1.請你以 read 指令的用途，撰寫一個 script ，他可以讓使用者輸入：1. first name 與 2. last name， 最後並且在屏幕上顯示：“Your full name is: ”的內容：

#!/bin/bash
#Program:
#       use input his first name and last name.Program shows his full name.
#History:
#2017/07/27     lzyer   release
read -p "Please input your first name:" firstname
read -p "
 
Please input your last name:" lastname
echo "Your full name is : ${firstname}.${lastname}"

2.隨日期變化：利用 date 進行文件的創建

#!/bin/bash
#Program:
#       Program creates three files, which named by user‘s input and date command.
#History
#2017/07/28     lzyer  First release

echo "I will use ‘touch‘ command to create 3 file.
 
"
read -p "Please input your filename :" fileuser
filename=${fileuser:-"filename"}
date1=$(date --date=‘2 days ago‘ +%Y%m%d)
date2=$(date --date=‘1 days ago‘ +%Y%m%d)
date3=$(date +%Y%m%d)
file1=${filename}${date1}
file2=${filename}${date2}
file3=${filename}${date3}

touch "${file1}" "${file2}" "${file3}
 
"

3.數值運算：簡單的加減乘除

#!/bin/bash
#Program:
#       use input 2 integer numbers; program will cross these two numbers.
#History:
#2017/07/28     lzyer First release
echo "you should input 2 numbers, i will multipfying them !"
read -p "first numbe: " firstnumber
read -p "second number: " secondnumber
total=$((${firstnumber}*${secondnumber}))
echo "The result of ${firstnumber} x ${secondnumber} ==> ${total}"

4.sh和source的差異性

linux bash學習(一)