TAC(1) >>>>>>> >>>>>>>>>>>> TAC(1)
>>>>>>>>>>>>
tac -- >>>>>>>>>> > >>>>>>>
>>>>>>>>>> >>>>>> >
>>>>>>>> >>>>>>>
>>>>>>>>>
tac [>>>>>>>>]... [>>>>]...
>>>>>>>>
>>>>>>> >>>>>> >>>> >
>>>>>>>>>>> >>>>> >>>>>>,
>>>>>>> > >>>>>>>>>
>>>>>>.
>>>> >>>> >> >>>>> >>>
>>>>> >>> -, >>>>>> >>
>>>>>>>>>>>> >>>>>>
>>>>>.
>>>>>>>>>, >>>>>>>>>>>>
>>> >>>>>>> >>>>>>>>>>,
>>>>>>>>>>> > >>>
>>>>>>>>.
-b, --before
>>>>>>>>>>>>
>>>>>>>>>>> > >>>>>>, >
>> > >>>>>
-r, --regex
>>>>>>>>>>>>
>>>>>>>>>>> >>>
>>>>>>>>>> >>>>>>>>>
-s, --separator=STRING
>>>>>>>>>>>> >>>>>> >
>>>>>>>> >>>>>>>>>>>
>>>>>> >>>>>>>> >>
>>>>> >>>>>>
--help >>>>>>>>>> >>>
>>>>>>>>>> >>>>>>>>>>
> >>>>>>>>> >>>>>>
--version
>>>>>>> >>>>>>>>>> >
>>>>>> > >>>>>>>>>
>>>>>>
Non-seekable input is buffered to $TMPDIR, defaulting to /tmp.
>>>>>>
>>>>>>>>> >>>>>>>> >>>>>
>>>>> (Jay Lepreau) > >>>>>>>
>>>>>>>> (David MacKenzie).
>>>>>>>>>> >> >>>>>>>
>>>>>>>>> >> >>>>>>> >>
>>>>>> bug-coreutils@gnu.org
>>>>>>>> >>>>>>>> GNU coreutils:
>>>>> >>>>>> >>
>>>>>>>>>>>>>
>>>>>>>>>>>> >>>>>>>>>>>
GNU:
>>>>>>>>> >>> >>>>
>>>>>>> >>>>>>>> >>
>>>>>>
>>>>>>>>> >>>>>
Copyright (C) 2026 Free Software Foundation, Inc.
>>>>>>>> GPLv3+: GNU GPL >>>>>> 3 >>>
>>>> .
>>> >>>>>>>>> >>>>>>>>>>>
>>>>>>>>>>>: >> >>>>>>
>>>>>>>> > >>>>>>>>>>>>>>
>>>. >> >>>>>>>>>>>>>>>
>>>>>>> >>>>>>>> > >>>
>>>>, > >>>>>>> >>>
>>>>>>>>> >>>>>>>.
>>>>>>>> >>>>>
cat(1), rev(1)
>>>>>> >>>>>>>>>>>> >>
,
>>>>> >>>>>>>> >>>>>>>>
>>>>>>>>>>> info '(coreutils) tac invocation'
>>>>>>>
>>>>>>> >>>>>>> >>>>
>>>>>>>> >>>>>>>>>>>
>>>>>>>>>>(>) >>>>>>
>>>>>>>>
>>>> >>>>>>> >>>>>>>>
>>>>>>>>> >>>>>>>>>>>
>>>>>>>>>>>>>; >>
>>>>>>>>>>>>>>>> >>
>>>>>>>> >>>>>>>>>>>>>
>>>>>>>> GNU (GNU General Public License - GPL,
>>>>>> 3
>>> >>>>> >>>>>>>) >
>>>>>>>>> >>>>>>>>>>
>>>>>, >> >>> >>>>>->>>>
>>>>>>>>.
>>>> >> >>>>>>>>>>
>>>>>->>>> >>>>>> >
>>>>>>>> >>>> >>>>>>>>
>>>>>>>>>>>, >>>>>>>>>>,
>>>>>>>> >> >>>>
>>>>>>>>>>>>(>>) >> >>>(>>)
>>>>>>(>>) >>>>>>>>>>>
>>>>> >>> >> >>>>>> >>>>>>
>>>>>>>> >>>>>>>
>>>>>>>>>>>>
.
GNU coreutils 9.11 >>>>>> 2026 >. TAC(1)