XML 문서 유효성 검사. 더 많은 정보: https://xmlstar.sourceforge.net/docs.php.
xml validate {{경로/대상/입력1.xml|URI}} {{input2.xml ...}}
xml validate --dtd {{경로/대상/스키마.dtd}} {{경로/대상/입력1.xml|URI}} {{input2.xml ...}}
xml validate --xsd {{경로/대상/스키마.xsd}} {{경로/대상/입력1.xml|URI}} {{input2.xml ...}}
xml validate --relaxng {{경로/대상/스키마.rng}} {{경로/대상/입력1.xml|URI}} {{input2.xml ...}}
xml validate --help