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Unix portability: comparing system calls

A May 5, 2026 post describes APUE portability tables for comparing system calls across Linux, BSD, macOS, and Solaris—a useful reference for planning cross-platform software.

By Wendelmaques ·

Source: Tabelas de portabilidade do APUE para programação de sistemas Unix (x.com). Text prepared with AI from this source.

What happened and what to do

The post, published on May 5, 2026, describes APUE as a Unix systems programming book with tables comparing system calls across Linux, BSD, macOS, and Solaris. It also notes that W. Richard Stevens died while working on the second edition, which Stephen Rago completed; Rago wrote the third edition. The tables can help engineers compare interfaces across platforms.

A company maintaining cross-platform Unix software could turn these comparisons into an inventory of calls in use, operating-system dependencies, and compatibility tests. The work could include monitoring platform-specific failures and a dashboard to track test coverage and guide updates.

How the consultancy can help

Wendelmaques can diagnose portability risks in your software, scope an implementation for platform inventories and tests, and support the operation of compatibility monitoring.

Next step

Send a short description of your software and target platforms to receive a scoped proposal.

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