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. 艾克斯：
AIX 是IBM 提供的一系列专有操作系统。 AIX 代表高级交互式执行程序。最初它是为 IBM RT PC RISC 工作站设计的，后来它被用于各种硬件平台，如 IBM RS/6000 系列、基于 PowerPC 的系统、System-370 大型机、PS-2 个人计算机和 Apple 网络服务器。它是通过 The Open Group 的 UNIX 03 标准认证的五个商业操作系统之一。 AIX 的第一个版本于 1986 年推出。AIX 的最新稳定版本是 7.2。
Linux 和 AIX 的区别：
| LINUX | AIX |
|---|---|
| It was developed by Linus Torvalds. | It was developed by IBM. |
| It was launched in 1991. | It was launched in 1986. |
| Its target system types are embedded systems, mobile devices, personal computers, servers, mainframe computers and supercomputers. | Its target system types are Server, NAS and workstation. |
| Computer architectures supported by Linux are IA-32, x86-64, ARM, PowerPC and SPARC. | Computer architectures supported by AIX are POWER, PowerPC-AS, PowerPC and Power ISA. |
| Kernel used in Linux is Monolithic. | Its kernel type is Monolithic with modules. |
| Its package management depends on the distribution. | Its package management is installp and RPM. |
| Its native APIs are Linux/POSIX. | Its native APIs are SysV/POSIX. |
| It has the preferred license of GNU GPLv2 (kernel). | It has the preferred license Proprietary. |
| Its update management depends on the distribution. | Its update management is Service Update Management Assistant (SUMA). |
| The non-native APIs supported by its subsystems are Mono, Java, Win16 and Win32. | The non-native APIs are not supported by its subsystems. |
| It has default GUI on. | It does not have default GUI on. |
| The file systems supported by Linux are ext2, ext3, ext4, btrfs, ReiserFS, FAT, ISO 9660, UDF and NFS. | The file systems supported by AIX are JFS, JFS2, ISO 9660, UDF, NFS, SMBFS and GPFS. |