TAC(1) >>>>> >>>>>>>> TAC(1)
>>>>>
tac - >>> >>>>>> >>>>>>> >>>>
>>>>>
>>>>
tac [>>>>]... [>>>]...
>>>>>
>>>> >> >>> >>> >>>>>
>>>>>>>>> >>> >>> >>>>>.
>>> >>> >>>>> >>>> >> >>>>>
>>>> >>>>> >> -> >>>> >>>>>
>>>>>>>.
>>>>>>>>> >>>>>>>>>
>>>>>>>> >>>>>>> >>>>>>>
>>>>>>>> >>>>>>> >>>>>.
-b, --before
>>>> >>>>>> >>> >>>>> >>
>>>
-r, --regex
>>> >>>>>> >>>>>> >>>>
-s, --separator=>>>>>
>>>>>> >>>>> >>>>>
>>>>> >> >>> >>>>
--help >>>> >>> >>>>>>>> >>>>>
--version
>>>> >>>>>>> >>>>>>>
>>>>>
>>>>>> >>> >>>>>> >>>>>
>>>>> >> $TMPDIR> >>>>>>> /tmp.
>>>>>>
>>>> >>> >>>>> >>>>>>
>>>>>>.
>>>>>>> >> >>>>>>>
>>>> >> >>>>>> >>>: bug-coreutils@gnu.org
>>>> GNU coreutils >>>>>>>:
>>>>>> >>>> >>>>>>>>
>>>>>>> >>>:
>>>> >> >> >>>>> >>>>> >>>
>>>> >>>>>
>>>> >>>>> (C) 2026 >>>>>
>>>>>>>>> >>>>> (Free Software Foundation,
Inc.). >>>>> GPLv3+: GNU GPL >>>>>>> 3 >>
>>>>. .
>>> >>>>>> >>: >>> >> >>
>>>>>> >>>>>> >>>>>>. >>
>>>> >> >>>>> >>> >>>>>
>>>> >>>> >> >>>>>>>.
>>>> >>>>>
cat(1), rev(1)
>>>>>>> >>>>>>
>> >>>> >>>>>> >>>: info '(coreutils) tac
invocation'
>>>>>
>>>>>> >>> >>>>>> >>
>>>>>> >>>>>> >>>>
>>>>>>>
>>> >>>>>>> >> >>>>>
>>>>>>> >>>> >>>> >>>
>>>>>> >>>>>>> 3
>> >> >>>>
>>>>>>> >>> >>>> >>>>
>>>>>. >> >>>> >> >>>>>>.
>>> >>>> >> >>>>> >> >>>>>
>>>> >>>>>> >>>> >>>>
>>>>> >>>> >>>>>>>> >>>
>>>>> >>>> >>>>>>>>>:
.
GNU coreutils 9.11 >>>>> 2026 TAC(1)