[变量1-规范-环境变量-普通变量](shell%E7%BC%96%E7%A8%8B/%E5%8F%98%E9%87%8F1-%E8%A7%84%E8%8C%83-%E7%8E%AF%E5%A2%83%E5%8F%98%E9%87%8F-%E6%99%AE%E9%80%9A%E5%8F%98%E9%87%8F.md) [变量2-位置-状态-特殊变量](shell%E7%BC%96%E7%A8%8B/%E5%8F%98%E9%87%8F2-%E4%BD%8D%E7%BD%AE-%E7%8A%B6%E6%80%81-%E7%89%B9%E6%AE%8A%E5%8F%98%E9%87%8F.md) [变量3-变量子串](shell%E7%BC%96%E7%A8%8B/%E5%8F%98%E9%87%8F3-%E5%8F%98%E9%87%8F%E5%AD%90%E4%B8%B2.md) [变量4-变量赋值三种方法](shell%E7%BC%96%E7%A8%8B/%E5%8F%98%E9%87%8F4-%E5%8F%98%E9%87%8F%E8%B5%8B%E5%80%BC%E4%B8%89%E7%A7%8D%E6%96%B9%E6%B3%95.md) [变量5-数组相关](shell%E7%BC%96%E7%A8%8B/%E5%8F%98%E9%87%8F-%E6%95%B0%E7%BB%84%E7%9B%B8%E5%85%B3.md) [计算1-数值计算命令和案例](shell%E7%BC%96%E7%A8%8B/%E8%AE%A1%E7%AE%971-%E6%95%B0%E5%80%BC%E8%AE%A1%E7%AE%97%E5%91%BD%E4%BB%A4%E5%92%8C%E6%A1%88%E4%BE%8B.md) [计算2-expr命令举例](shell%E7%BC%96%E7%A8%8B/%E8%AE%A1%E7%AE%972-expr%E5%91%BD%E4%BB%A4%E4%B8%BE%E4%BE%8B.md) [计算3-条件表达式和各种操作符](shell%E7%BC%96%E7%A8%8B/%E8%AE%A1%E7%AE%973-%E6%9D%A1%E4%BB%B6%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%92%8C%E5%90%84%E7%A7%8D%E6%93%8D%E4%BD%9C%E7%AC%A6.md) [计算4-条件表达式和操作符案例](shell%E7%BC%96%E7%A8%8B/%E8%AE%A1%E7%AE%974-%E6%9D%A1%E4%BB%B6%E8%A1%A8%E8%BE%BE%E5%BC%8F%E5%92%8C%E6%93%8D%E4%BD%9C%E7%AC%A6%E6%A1%88%E4%BE%8B.md) [循环1-函数的概念与作用](shell%E7%BC%96%E7%A8%8B/%E5%BE%AA%E7%8E%AF1-%E5%87%BD%E6%95%B0%E7%9A%84%E6%A6%82%E5%BF%B5%E4%B8%8E%E4%BD%9C%E7%94%A8.md) [循环2-if与case语法](shell%E7%BC%96%E7%A8%8B/%E5%BE%AA%E7%8E%AF2-if%E4%B8%8Ecase%E8%AF%AD%E6%B3%95.md) [循环3-while语法](shell%E7%BC%96%E7%A8%8B/%E5%BE%AA%E7%8E%AF3-while%E8%AF%AD%E6%B3%95.md) [循环4-for循环](shell%E7%BC%96%E7%A8%8B/%E5%BE%AA%E7%8E%AF4-for%E5%BE%AA%E7%8E%AF.md) [其他1-判断传入的参数为0或整数的多种思路](shell%E7%BC%96%E7%A8%8B/%E5%85%B6%E4%BB%961-%E5%88%A4%E6%96%AD%E4%BC%A0%E5%85%A5%E7%9A%84%E5%8F%82%E6%95%B0%E4%B8%BA0%E6%88%96%E6%95%B4%E6%95%B0%E7%9A%84%E5%A4%9A%E7%A7%8D%E6%80%9D%E8%B7%AF.md) [其他2-while+read按行读取文件](shell%E7%BC%96%E7%A8%8B/%E5%85%B6%E4%BB%962-while+read%E6%8C%89%E8%A1%8C%E8%AF%BB%E5%8F%96%E6%96%87%E4%BB%B6.md) [其他3-给输出内容加颜色](shell%E7%BC%96%E7%A8%8B/%E5%85%B6%E4%BB%963-%E7%BB%99%E8%BE%93%E5%87%BA%E5%86%85%E5%AE%B9%E5%8A%A0%E9%A2%9C%E8%89%B2.md) [其他4-shell脚本后台运行知识](shell%E7%BC%96%E7%A8%8B/%E5%85%B6%E4%BB%964-shell%E8%84%9A%E6%9C%AC%E5%90%8E%E5%8F%B0%E8%BF%90%E8%A1%8C%E7%9F%A5%E8%AF%86.md) [其他5-6种产生随机数的方法](shell%E7%BC%96%E7%A8%8B/%E5%85%B6%E4%BB%965-6%E7%A7%8D%E4%BA%A7%E7%94%9F%E9%9A%8F%E6%9C%BA%E6%95%B0%E7%9A%84%E6%96%B9%E6%B3%95.md) [其他6-break,continue,exit,return区别](shell%E7%BC%96%E7%A8%8B/%E5%85%B6%E4%BB%966-break,continue,exit,return%E5%8C%BA%E5%88%AB.md) [if语法案例](shell%E7%BC%96%E7%A8%8B/if%E8%AF%AD%E6%B3%95%E6%A1%88%E4%BE%8B-%E5%88%A4%E6%96%AD%E7%B3%BB%E7%BB%9F%E5%89%A9%E4%BD%99%E5%86%85%E5%AD%98.md) [case语法案例](shell%E7%BC%96%E7%A8%8B/case%E8%AF%AD%E6%B3%95%E6%A1%88%E4%BE%8B.md) [函数语法案例](shell%E7%BC%96%E7%A8%8B/%E5%87%BD%E6%95%B0%E8%AF%AD%E6%B3%95%E6%A1%88%E4%BE%8B-rsync%E5%90%AF%E5%81%9C%E8%84%9A%E6%9C%AC.md)