命令行:sudo apt install squid
提示错误:package 'squid' has no installation candidate
尝试命令:sudo apt-get install squid
出现错误提示:Unable to locate pakage squid
输入:sudo apt-get update 进行更新后
再次输入:sudo apt-get install squid 下载成功
查看squid软件包信息:sudo apt-get install squid
卸载squid软件包:sudo apt-get remove squid
