1. Linux：
Linux是由Linus Torvalds开发的一组类似于Unix的开源操作系统。它是Linux发行版的打包。一些最常用的Linux发行版是Debian，Fedora和Ubuntu。它基本上是用C语言和汇编语言编写的。 Linux中使用的内核是Monolithic内核。 Linux发行版的目标系统是云计算，嵌入式系统，移动设备，个人计算机，服务器，大型计算机和超级计算机。 1991年发布了第一个Linux版本。用于个人计算机的最新Linux版本是5.6(内核)。
2. Android：
Android是Google提供的移动操作系统。它基于Linux内核和其他开放源代码软件的修改版。它是专为智能手机和平板电脑等触摸屏移动设备设计的。它是使用C， Java，C++和其他语言开发的。 Google于2008年推出了第一个Android版本。最新的稳定版Android是Android10。它完全免费提供。总体来说，它是最常用的操作系统。
Linux和Android之间的区别：
| LINUX | ANDROID |
|---|---|
| It was developed by Linus Torvalds. | It was developed by Google LLC. |
| It was launched in 1991. | It was launched in 200. |
| It is designed for PC of all companies. | It is specifically designed for mobile devices. |
| Kernel used in Linux is Monolithic. | Its Kernel type is Linux-based. |
| It has the preferred license of GNU GPLv2 (kernel). | It has the preferred license of Apache 2.0 and GNU GPLv2. |
| It is written mainly using C and assembly language. | It is written using C, C++, Java and other languages. |
| It is the used in personal computers with complex tasks. | It is the most used operating system overall. |
| It target system types are embedded systems, mobile devices, personal computers, servers, mainframe computers and supercomputers. | Its target system types are smartphones and tablet computers. |
| It is mostly used for hacking purpose based tasks. | It is used in mobile devices for all simple tasks. |