Ubuntu是一个基于 Linux 的操作系统，属于 Linux 的 Debian 家族。因为它是基于 Linux 的，所以它可以免费使用并且是开源的。它是由 Mark Shuttleworth 领导的“Canonical ”团队开发的。 “ubuntu”一词源自一个非洲词，意思是“对他人的人性”。中文版的Ubuntu用于运行世界上最快的超级计算机。谷歌的自动驾驶汽车使用的是 ubuntu 的精简版。
Kali Linux是一个基于 Linux 的开源操作系统，可以免费使用。它属于 Linux 的 Debian 家族。它是由“进攻性安全”开发的。它于 2013 年 3 月首次发布，旨在替代 BackTrackOS。 Kali 包含 100 多种渗透测试、安全研究、数字取证、逆向工程和道德黑客工具。
Ubuntu 和 Kali Linux 的区别
| S.No. | Ubuntu | Kali Linux |
|---|---|---|
| 1. | Developed by canonical. | Developed by Offensive Security. |
| 2. | Ubuntu was initially released on 20 October 2004. | Kali was initially released on 13 March 2013. |
| 3. | Ubuntu is used for daily use or on server. | Kali is used by security researchers or ethical hackers for security purposes |
| 4. | Latest version(2020.04) of ubuntu uses Gnome-terminal by default. | Latest version(2020.2) of kali uses qterminal by default. |
| 5. | Latest Ubuntu consists of the Gnome environment by default, though it allows you to change the same. | Latest Kali consists of the xfce environment by default, though it allows you to change the same. |
| 6. | Ubuntu doesn’t comes packed with hacking and penetration testing tools. | Kali comes packed with hacking and penetration testing tools. |
| 7. | Comes with a user friendly Interface | Comes with a less user friendly Interface as compared to ubuntu. |
| 8. | Ubuntu is a good option for beginners to Linux. | Kali Linux is a good option for those who are intermediate in Linux. |
| 9. | Latest Ubuntu live has the default username as root. | Latest Kali Linux has a default username as kali. |
| 10. | Latest Ubuntu live has the default password as (blank). | Latest Kali Linux has a default password as kali. |