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Source file src/os/sys_linux.go

  // Copyright 2009 The Go Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style
  // license that can be found in the LICENSE file.
  
  // Linux-specific
  
  package os
  
  func hostname() (name string, err error) {
  	f, err := Open("/proc/sys/kernel/hostname")
  	if err != nil {
  		return "", err
  	}
  	defer f.Close()
  
  	var buf [512]byte // Enough for a DNS name.
  	n, err := f.Read(buf[0:])
  	if err != nil {
  		return "", err
  	}
  
  	if n > 0 && buf[n-1] == '\n' {
  		n--
  	}
  	return string(buf[0:n]), nil
  }
  

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