Python之禅——跟老吕学Python编程 Python之禅1.**Beautiful is better than ugly.**2.**Explicit is better than implicit.**3.**Simple is better than complex.**4.**Complex is better than complicated.**5.**Flat is better than nested.**6.**Spare is better than den…
1.前言
1.1 linux系统中的shell是什么
在Linux系统中, shell是用户与操作系统进行交互的媒介,bash是目前Linux系统中最常用的shell,我们以bash为例介绍shell的特性,Bash是一个与sh兼容的命令语言解释器,它执行从标准输入或文件中读取的命令。 Bash is an sh-compatible…