```ruby
def execute(cmd)
pid, stdin, stdout, stderr = Open4::popen4("#{cmd} 2>&1") # Redirect stderr to stdout
ignored, status = Process::waitpid2(pid)
raise "'#{cmd.gsub(/\s+/, ' ')}' exited with status #{status}. Details:\n\n#{stdout}" if status != 0
[status, stdout.read.strip]
end
```