public static boolean isUnix(){
  return (OS_NAME.contains("nix") || OS_NAME.contains("nux") || OS_NAME.indexOf("aix") > 0 || OS_NAME.contains("sunos"));
}

public static boolean isUnix ( ) { return ( OS_NAME . contains ( "nix" ) || OS_NAME . contains ( "nux" ) || OS_NAME . indexOf ( "aix" ) > 0 || OS_NAME . contains ( "sunos" ) ) ; }
determine if the current operating system is unix
