What Linus Torvalds Reveals After 25 Years of Shaping Linux

Background

In 1994 Linux Journal published its first interview with Linus Torvalds. Twenty‑five years later Robert Young revisited Torvalds to discuss the technical evolution of the Linux kernel, development practices, and future expectations.

Development Model and Longevity

Torvalds emphasizes that Linux has no formal long‑term roadmap. Development proceeds day‑by‑day, guided by a meritocratic patch‑review process. The kernel’s success is attributed to its open, collaborative model rather than any specific code design.

Role and Workflow

Early in the project Torvalds wrote most of the code. Today he acts primarily as a technical leader, reviewing patches, providing pseudo‑code or sample patches, and coordinating contributors. The workflow relies on git for patch distribution, which replaces the earlier email‑centric model and allows developers to work from any machine.

Kernel Language and Large‑Scale Rewrites

The kernel remains a unified C codebase. Over the past 25 years many subsystems have undergone extensive rewrites, often to retire support for obsolete hardware. While C has evolved with extensions for stronger type checking and runtime verification, no viable alternative language has emerged for low‑level system work. Torvalds notes that higher‑level languages are used for user‑space tools, but the core kernel continues to be written in C.

Hardware Setup

Torvalds develops on a custom‑built, fan‑less PC workstation that prioritises silence and reliability. For portability he uses a lightweight laptop (currently a Dell XPS 13) with a high‑quality screen, aiming for a sub‑kilogram form factor.

Linux on Desktop vs. Mobile

Traditional desktop PCs have declined in market share; most users now interact with Linux‑based systems via browsers on tablets or phones. Android, built on the Linux kernel, accounts for a large portion of Linux usage today.

Communication Practices

Torvalds prefers email over social media, citing the latter’s tendency to encourage toxic behaviour. He discards unimportant messages, stores mail in the cloud for easy access across devices, and relies on the principle that important communications will be resent if missed.

Advice for New Developers

Torvalds recommends self‑directed learning driven by curiosity. He does not prescribe a specific career path; instead, aspiring programmers should follow their interests, experiment with code, and contribute patches through the open‑source workflow.

Future Outlook

Looking ahead 25 years, Torvalds expects Linux to remain robust due to its development model, even if he reduces personal involvement. He anticipates continued large‑scale subsystem rewrites as hardware evolves, but does not foresee a complete language shift away from C.