82         onlyif = kw.get("onlyif", None)
90                 onlyif, unless, directory=directory, runas=runas, env=env
463     onlyif=None,  argument
556     onlyif=None,  argument
720     onlyif=None,  argument
899     onlyif=None,  argument
997 def _check_onlyif_unless(onlyif, unless, directory, runas=None, env=()):  argument
1004         if onlyif is not None:
1005             if not isinstance(onlyif, str):
1006                 if not onlyif:
1008             elif isinstance(onlyif, str):
1009                 if retcode(onlyif, cwd=directory, runas=runas, env=env) != 0: