From Unix to Android: Tracing the Evolution of Modern Operating Systems

Unix, simplified, formed Linux; Linux is the kernel of Android, while Apple uses the Unix system as the kernel of iOS and macOS.

Timeline of System Emergence

Birth of UNIX

In 1969, Bell Labs researcher Ken Thompson wrote a computer game called Space Travel, which performed poorly on several systems, prompting him to develop his own operating system, leading to the birth of UNIX.

Bell Labs was once a legendary institution, but it was later broken up due to antitrust actions, marking the end of an era.

Birth of Linux

In 1991, while studying at university, Linus Torvalds created Linux as a personal hobby, essentially a mini version of UNIX. He subsequently released the Linux source code publicly and invited others to help improve it.

It is said that Linus’s own code accounts for only about 2% of the Linux source, yet his name will forever be remembered in the history of the Internet.

Apple iOS Born from UNIX

Apple announced iOS at the Macworld conference on January 9, 2007. It was initially designed for the iPhone and later extended to iPod touch and iPad.

iOS, like Apple’s macOS, is a commercial Unix‑like operating system.

Android Born from Linux

In November 2007, Google and 84 hardware manufacturers, software developers, and telecom operators formed the Open Handset Alliance to jointly develop and improve Android.

Google released Android under the Apache open‑source license; Android is an operating system based on the Linux kernel (without GNU components).

Conclusion

Thus we can clearly trace the line: Unix simplified to Linux, Linux serves as the kernel of Android, and Apple uses the Unix system as the kernel of iOS and macOS.