1. 終端打印

#!/bin/bash
#The printf of Linux termnal,Include "echo,printf"
#author by woon 
echo "The shell\`s name is $0"

#examples of echo,printf
#默認打印。輸出換行
echo "Hello World!" 
echo ‘Hello World!‘
#echo -n參數接受不換行輸出
echo -n "Hello World"
echo "Hello World"
#-e參數接受雙引號內字符串的轉移列表
echo "Hello\tWorld!"
echo -e "Hello\tWorld!"
#printf使用文本或由空格分割的參數，可指定輸出的寬度、對其方式等，可以格式化輸出，默認情況下，printf不輸出換行
printf "%-5s %-10s %-4s\n" No. NAME Mark
printf "%-5s %-10s %-4s\n" 1 Lee 80
printf "%-5s %-10s %-4.2f\n" 2 Woon 90.456
printf "%-5s %-10s %-4.2f\n" 3 James 85.654321
printf "%-5s %-10s %-5.3f\n" 4 Jeff 85.123789
 

2. 玩轉變量

Linux shell腳本實例——由淺入深（一）