chown(string|array|Traversable $files, string $user, bool $recursive = false)

bool lock(bool $blocking = false) Lock the resource.

rename(string $origin, string $target, bool $overwrite = false) Renames a file or a directory.

bool isAbsolutePath(string $file) Returns whether the file path is an absolute path.

release() Release the resource.

dumpFile(string $filename, string $content) Atomically dumps content into a file.

chgrp(string|array|Traversable $files, string $group, bool $recursive = false)

string makePathRelative(string $endPath, string $startPath) Given an existing path, convert it

symlink(string $originDir, string $targetDir, bool $copyOnWindows = false) Creates a symbolic link

chmod(string|array|Traversable $files, int $mode, int $umask, bool $recursive = false)