每天写点shell

Posted 2020-08-22 子非木

1、read基本读取

  1 #!/bin/bash
  2 #testing the read command
  3 
  4 echo -n "Enter you name:"   #echo -n 让用户直接在后面输入 
  5 read name  #
  6 echo "Hello $name, welcome to my program."
                                               

 执行：

# ./read.sh
Enter you name: wangtao
Hello wangtao, welcome to my program.

 

2、read -p (直接在read命令行指定提示符)

  1 #!/bin/bash
  2 #testing the read -p option
  3 read -p "Please enter your age: " age
  4 days=$[ $age * 365 ]
  5 echo "That makes you over $days days old!"

执行：

# ./age.sh
Please enter your age: 23
That makes you over 8395 days old!