拨号上网操作及一些相关指令：

http://www.iamlintao.com/3251.html

sudo pppoeconf操作：

https://blog.csdn.net/weixin_42766327/article/details/81433735?utm_medium=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7EBlogCommendFromMachineLearnPai2%7Edefault-1.control&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-2%7Edefault%7EBlogCommendFromMachineLearnPai2%7Edefault-1.control

出现错误：pppoeconf command not found

https://blog.csdn.net/qq_36561737/article/details/106955258?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522162029650016780255211666%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=162029650016780255211666&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~baidu_landing_v2~default-1-106955258.first_rank_v2_pc_rank_v29&utm_term=pppoeconf+command+not+found&spm=1018.2226.3001.4187