Java tutorial
import static java.nio.file.attribute.PosixFilePermission.GROUP_READ; import static java.nio.file.attribute.PosixFilePermission.OWNER_READ; import static java.nio.file.attribute.PosixFilePermission.OWNER_WRITE; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; import java.nio.file.attribute.PosixFileAttributes; import java.nio.file.attribute.PosixFilePermission; import java.nio.file.attribute.PosixFilePermissions; import java.util.Set; public class Test { public static void main(String[] args) throws Exception { Path profile = Paths.get("/user/Admin/.profile"); PosixFileAttributes attrs = Files.readAttributes(profile, PosixFileAttributes.class); Set<PosixFilePermission> posixPermissions = attrs.permissions(); posixPermissions.clear(); String owner = attrs.owner().getName(); String perms = PosixFilePermissions.toString(posixPermissions); System.out.format("%s %s%n", owner, perms); posixPermissions.add(OWNER_READ); posixPermissions.add(GROUP_READ); posixPermissions.add(OWNER_READ); posixPermissions.add(OWNER_WRITE); Files.setPosixFilePermissions(profile, posixPermissions); } }