1. Linux：
Linux 是一组开源的类 Unix 操作系统，由 Linus Torvalds 开发。它是一个打包的 Linux 发行版。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。 Linux 的第一个版本于 1991 年推出。用于个人计算机的 Linux 的最新版本是 5.6(内核)。
2. AmigaOS 4：
AmigaOS 4 是由 Hyperion Entertainment 提供的 Amiga 操作系统系列。它用于运行 PowerPC 微处理器。它的设计主要基于 Commodore 的 AmigaOS 3.1。它部分基于德国公司 Haage and Partner 的 AmigaOS 3.9。它主要是用C语言编写的。它属于 AmigaOS 家族。 AmigaOS 4 的第一个版本于 2004 年推出。AmigaOS 4 的最新稳定版本是 4.1 Final Edition。它也被称为OS4或AOS4 。
Linux 和 AmigaOS 4 的区别：
| LINUX | AMIGAOS 4 |
|---|---|
| It was developed by Linus Torvalds. | It was developed by Hyperion Entertainment. |
| It was launched in 1991. | It was launched in 2004. |
| Its target system types are embedded systems, mobile devices, personal computers, servers, mainframe computers and supercomputers. | Its target system types are workstation and personal computers. |
| Computer architectures supported by Linux are IA-32, x86-64, ARM, PowerPC and SPARC. | Computer architectures supported by AmigaOS 4 is PowerPC. |
| Kernel used in Linux is Monolithic. | Its kernel type is Microkernel. |
| Its package management depends on the distribution. | Its package management is Installer. |
| Its native APIs are Linux/POSIX. | Its native APIs are Proprietary. |
| It has the preferred license of GNU GPLv2 (kernel). | It has the preferred license Proprietary. |
| Its ppdate management depends on the distribution. | Its update management is AmiUpdate which is almost not needed. |
| The non-native APIs supported by its subsystems are Mono, Java, Win16 and Win32. | The non-native APIs supported by its subsystems are BSD subsets. |
| File systems supported by Linux are ext2, ext3, ext4, btrfs, ReiserFS, FAT, ISO 9660, UDF and NFS. | File systems supported by AmigaOS 4 are OFS, FFS, SFS, PFS, JXFS, FAT, ISO 9660, UDF and SMBFS. |