Shell ScriptingL1. Introduction to ShellC1: manipulating files and directoriespwd: where am I?ls: how can I identify files and directories?How else can I identify files and directories?cd: how can I move to another directory?How can I move up a directory?c

Vim simple cheat sheet Create a new file named by abc123: vim abc123 Navigation: To move down a line, press "j". To move up a line, press "k". To move to the right, press "l". To move to the lef...

Perl 模块安装 参考： 各个平台下 Perl 模块安装总结 官网介绍 Error: Can’t create ‘/Library/Perl/5.18/App’：改用sudo Tutorial2.pl use strict; use warnings; sub main { print "Hello World!\n"; } main(); Tutorial3.pl use strict...