Vi共分三种模式，分别是“一般模式”、“编辑模式”与“命令行命令模式”。 一般模式：vi处理文件时，一进入该文件就是一般模式。在这个模式中，可

Having some basic knowledge of SSH and Unix commands is very useful. Developed in 1995, SSH (Secure Shell) was created as a secure alternative to Telnet. Telnet is a protocol allowing for command line access to a Unix, Linux or FreeBSD based remote computer. I’ve listed some basic commands to get you familiar with them. The cd command is used to move to a specific directory. Command: cd Format: cd /directory/to/browse