How a 21‑Year‑Old Impoverished Student Built Linux: From Hobby to Global OS

1. The Poor Student's Dilemma

Linus Torvalds, a 21‑year‑old computer‑science student in 1991, could not afford a commercial UNIX workstation, which cost thousands of dollars. He cobbled together a 386 PC but found no usable system; the only available option was MINIX, a teaching OS that was limited and slow, especially its terminal emulator.

2. “If I Can’t Buy One, I’ll Write My Own”

In August 1991 Torvalds began writing his own OS, initially just to get a usable terminal. After a few months he produced about ten thousand lines of code on his 386 machine. In September 1991 he uploaded a version that even failed to compile to an FTP server, encouraging others to “share first, fix later,” a practice that was unconventional at the time.

3. A Decision That Changed History

Torvalds chose to abandon the “no commercial use” restriction and fully embrace the GPL, allowing anyone to use, modify, and redistribute Linux, provided derived versions also remain open source.

Anyone can use Linux for free.

Anyone can modify and distribute it.

Any distributed version must also be open‑source.

4. Pragmatism Wins

Why did Linux succeed? The GNU project already supplied compilers, editors, and debuggers, lacking only a kernel. GNU’s Hurd kernel pursued theoretical perfection for a decade without usable results. Linux’s kernel, only about ten thousand lines, was runnable and fast, even if some called it a “macro kernel” and “outdated.” Thousands of programmers who could not afford UNIX saw a functional system, contributed network‑card drivers, sound support, memory management, and within two years the hobby project became a complete operating system.

Next preview: a professor declares “Linux is outdated junk”; how the 21‑year‑old student fights back.