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  • linux bash学习(一)

    1.请你以 read 指令的用途,撰写一个 script ,他可以让使用者输入:1. first name 与 2. last name, 最后并且在屏幕上显示:“Your full name is: ”的内容:

    #!/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.随日期变化:利用 date 进行文件的创建

    #!/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.数值运算:简单的加减乘除

    #!/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的差异性

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  • 原文地址:https://www.cnblogs.com/lzeffort/p/7253215.html
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