Let’s Encrypt是一个免费的CA证书颁发机构，从v2版本协议开始支持泛域名证书申请。
linux
第一篇万字长文：围绕透明代理的又一次探究
是的，你没有看错，还是这个主题。我也没什么办法，因为实在是不完美啊！比如：
- 腾讯会议、QQ 电话等类似软件断流
- 网易云音乐断流
- ……
为了解决这些问题，我辗转反侧的思考，日夜不停的实验，在树莓派和 J1900 之间反复横跳，安装 OpenWrt，使用 Redirect 代替 TProxy，更换不同的 DNS 查询思路，调试 V2Ray 配置等等。直到今天（真实情况是几天前），我又重新装回了亲切的 Ubuntu 20.04，趁机记录一下过程以及一些零碎的思考。
仅以此文，作为大半年来所学知识与亲手实践之总结。
90 Linux Commands frequently used by Linux Sysadmins
There are well over 100 Unix commands shared by the Linux kernel and other Unix-like operating systems. If you are interested in the commands frequently used by Linux sysadmins and power users, you’ve come to the place. Recently, I published a five-part series covering commands often used by Linux sysadmins.
Below I’ve listed the 90 commands covered and links to each of the five posts in this series. Some of the commands listed include links to related articles. There are also thousands of commands available if we include downloadable software and scripts, such as bpytop (pictured below). However, for this article’s purpose, we will cover mostly Unix commands used on Linux by sysadmins and power users. If you find this page useful, let me know if you’d like to see similar posts in the future.
Pictured: bpytop – There are many system/server monitoring and network command-line tools available.