主题： uname

• Detecting the operating system from a script: uname, os-release, sw_vers, oslevel and a fallback order

  A portable script needs a reliable way to branch on operating system and version before running an OS-specific command from any of the other articles in this series. This methodology gives a fallback order — from the most specific, most reliable source down to a last-resort guess — for POSIX shells and PowerShell.

  methodology · en · reviewed · 知识截至 2026-09-24

机器可读： JSON