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Linux's 'everything is a file' idea is 50 years old, and it still explains ...
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Key FactsA Unix principle still shapes Linux
Oct 25, 2026 · Reading time: ~30 sec.
Summary created with AI assistance · Source: xda-developers.com
  • Unix began at Bell Labs in 1969; Ritchie and Thompson’s 1974 work distinguished three file types, including device files.

  • On Linux, /dev represents hardware as files: SATA drives appear as /dev/sda, while NVMe drives include names such as /dev/nvme0n1.

  • The virtual filesystems /proc and /sys expose kernel information; battery charge, for example, is available there as a percentage.

  • Unix gained pipes in early 1973, forwarding program output; PowerShell instead passes structured, .NET-based data between commands.
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