STDBUF(1) >>>>> >>>>>>>> STDBUF(1)
>>>>>
stdbuf - >>>>> COMMAND> >> >>>>>>
>>>>> >>>> >>>>> >>>>>>>>
>>>>>>>>.
>>>>
stdbuf OPTION... COMMAND
>>>>>
>>>>> COMMAND> >> >>>>>> >>>>>
>>>> >>>>> >>>>>>>>
>>>>>>>>.
>>>>>>>>> >>>>>>>>>
>>>>>>>> >>>>>>> >>>>>>>
>>>>>>>> >>>>>>> >>>>>.
-i, --input=MODE
>>> >>>>>>> >>>>>>
>>>>> >>>>>>> >>>>>>>
-o, --output=MODE
>>> >>>>>>> >>>>>>
>>>>> >>>>>>> >>>>>>>
-e, --error=MODE
>>> >>>>>>> >>>>>>
>>>>> >>>>> >>>>>>>
--help >>>> >>> >>>>>>>> >>>>>
--version
>>>> >>>>>>> >>>>>>>
>>>>>
>>> >>> MODE >> 'L' >>>>>>
>>>>>> >>>>>>> >>>>>
>>>>> >>>>>. >>> >>>>>> >>>
>>>> >> >>>>>>> >>>>>>>.
>>> >>> MODE >> '0' >>>>>>
>>>>>> >>>>>>> >>> >>>>>
>>>>>.
>>>> >>> MODE >> >>> >> >>>>>
>>> >> >>>: KB 1000, K 1024, MB 1000*1000, M 1024*1024,
>>>>> >> G,T,P,E,Z,Y,R,Q. >>>>
>>>>>>> >>>>>>>> >>>>>>>>
>>>>>: KiB=K, MiB=M, >>>>>. >> >>>
>>>>>> >>>>> >>>>>>
>>>>>>> >>>>> >>>>>
>>>>>>> >> >>> >>>>> >>>>>
>>> MODE >>>>.
>>>>>>: >>> >>> COMMAND >>>>>>>
>>>>>> >>>>>>>> >>>>>>>>
(>>>>> >>>> 'tee' >>>>) >>>>>
>>> >>> >>>>>>>>>
>>>>>>>> >>>>>> 'stdbuf'. >>>>>
>>> >>>>>>>> (>>> 'dd' > 'cat'
>>>.) >> >>>>>> >>>>>>>>
>>>>>>>/>>>>>>>> >>>>>>>>
>> >>>>> >>>>>>>> 'stdbuf'.
>>>> >>>>>>:
125 >>> >>> >>> stdbuf >>>>
126 >>> >>>> COMMAND >>>> >>>>
>>>>>>>>
127 >>> >>>> >>>>>> >>> COMMAND
- >>>> >>>> COMMAND >>>>> >>>
>>>>>
tail -f access.log | stdbuf -oL cut -d ' ' -f1 | uniq
>>>>> >>> >>>> >>>>>>>>>
>>>>>>> >> access.log
>>>>>
>>> >>>>> GLIBC> >>>>> >>>
>>>>>> >> >>>>>>> >>>
>>>>>>> >>>>>> >>>>>>
>>>>> >>> >>>>> >>> >>>>>.
>>>>>>
>>>> Padraig Brady.
>>>>>>> >> >>>>>>>
>>>> >> >>>>>> >>>: bug-coreutils@gnu.org
>>>> GNU coreutils >>>>>>>:
>>>>>> >>>> >>>>>>>>
>>>>>>> >>>:
>>>> >> >> >>>>> >>>>> >>>
>>>> >>>>>
>>>> >>>>> (C) 2026 >>>>>
>>>>>>>>> >>>>> (Free Software Foundation,
Inc.). >>>>> GPLv3+: GNU GPL >>>>>>> 3 >>
>>>>. .
>>> >>>>>> >>: >>> >> >>
>>>>>> >>>>>> >>>>>>. >>
>>>> >> >>>>> >>> >>>>>
>>>> >>>> >> >>>>>>>.
>>>> >>>>>
>>>>>>> >>>>>>
>> >>>>> >>>>> >>>: info '(coreutils)
stdbuf invocation'
>>>>>
>>>>>> >>> >>>>>> >>
>>>>>> >>>>>> >>>>
>>>>>>>
>>> >>>>>>> >> >>>>>
>>>>>>> >>>> >>>> >>>
>>>>>> >>>>>>> 3
>> >> >>>>
>>>>>>> >>> >>>> >>>>
>>>>>. >> >>>> >> >>>>>>.
>>> >>>> >> >>>>> >> >>>>>
>>>> >>>>>> >>>> >>>>
>>>>> >>>> >>>>>>>> >>>
>>>>> >>>> >>>>>>>>>:
.
GNU coreutils 9.11 >>>>> 2026 STDBUF(1)