AbsFromRelativeToBin : function that returns the absolute path to a file/directory computed with the directory of the binary as the root Example : if bin is /opt/program this function will return an absolute path computed as relative to /opt/ @relPath : the parts of the path you want to Join in your final path return (string, error) : the absolute path and an error if necessary.

CopyFile : copies src file to dst file.

Exists returns true if file at path exists.

IsDir returns true if path is a directory.

IsFile returns true if path is a file.

IsLink returns true if path is a Symlink.

ResolveLink resolves the link if it is a Link or return the original path.

ErrDstNotRegularFile : dst not a regular file.

ErrSrcNotRegularFile : src not a regular file.