Linux shell脚本实例——由浅入深（一）

Linux shell基础篇

1. 终端打印

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

#examples of echo,printf
#默认打印。输出换行
echo "Hello World!" 
echo 'Hello World!'
#echo -n参数接受不换行输出
echo -n "Hello World"
echo "Hello World"
#-e参数接受双引号内字符串的转移列表
echo "Hello\tWorld!"
echo -e "Hello\tWorld!"
#printf使用文本或由空格分割的参数，可指定输出的宽度、对其方式等，可以格式化输出，默认情况下，printf不输出换行
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. 玩转变量