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Maintenance Ruby 3.3 gets fixes, but no new features. Switch to Ruby 4.0 →

class method

Process::Sys.getuid

Process.uid → integer
Process::UID.rid → integer
Process::Sys.getuid → integer

Returns the (real) user ID of the current process.

Example
Process.uid # => 1000
See also .getgid .issetugid .geteuid .setegid also in 4.1 · 4.0 · 3.4 · 3.2 · 3.1 · 3.0