EXPR(1) >>>>> >>>>>>>> EXPR(1)
>>>>>
expr - >>>>> >>>>>>>>
>>>>
expr EXPRESSION
expr OPTION
>>>>>
--help >>>> >>> >>>>>>>> >>>>>
--version
>>>> >>>>>>> >>>>>>>
>>>>>
>>>> >>>> EXPRESSION >>> >>>>>
>>>>>>>>. >>> >>>> >>>>>
>>>> >>>>>>> >>>>>>>>
>>>>>>>>>. >> >>>> EXPRESSION:
ARG1 | ARG2
ARG1 >>> >> >>> >>>>>> >>>
0> >>>> ARG2
ARG1 & ARG2
ARG1 >>> >> >>> >> >>
>>>>>>>> >>>>>> >> 0>
>>>> 0
ARG1 < ARG2
ARG1 >>>> >> ARG2
ARG1 <= ARG2
ARG1 >>>> >> >> >>>>> ARG2
ARG1 = ARG2
ARG1 >>>>> ARG2
ARG1 != ARG2
ARG1 >> >>>>> ARG2
ARG1 >= ARG2
ARG1 >>>> >> >> >>>>> ARG2
ARG1 > ARG2
ARG1 >>>> >> ARG2
ARG1 + ARG2
>>>>>>> >>>>>>> >> ARG1 > ARG2
ARG1 - ARG2
>>>>> >>>>>>> >>> ARG1 > ARG2
ARG1 * ARG2
>>>>> >>>>>>> >> ARG1 > ARG2
ARG1 / ARG2
>>>> >>>>>> >>>>>>> >>
ARG1 >>>>>>> >>> ARG2
ARG1 % ARG2
>>>>>> >>>>>>> >> ARG1
>>>>>>> >>> ARG2
STRING : REGEXP
>>>>>> >>> >>>>> >> REGEXP
>> STRING
match STRING REGEXP
>>> STRING : REGEXP
substr STRING POS LENGTH
>>>>> >>>>> >> STRING> POS
>>>> >> 1
index STRING CHARS
>>>>>> >> STRING >>> >>>>>
>> CHARS> >> 0
length STRING
>>> STRING
+ TOKEN
>>>>> TOKEN >>>>>>> >>> >>
>>>> >>>> >>>>>>> >>>
'match' >> >>>> >>> '/'
( >>>>>>> )
>>>> EXPRESSION
>>>> >> >>>>>> >> >>>>>>>
>>>>> >>> >>>>>> >>
>>>>>>>> >>>>>>>.
>>>>>>>>> >>>>>> >>> >>>
>>> ARG >>>>>> >>>> >>>>>>.
>>>>>>> >>>>> >>>>>
>>>>>>> >>>>>>>> >>> \( > \)
>> >>>>>> >>> >> >>>>>>> \( >
\)> >>>>> >>>>> >>> >>>>>>
>>>>>>>> >> 0.
>>>> >>>>>> >> 0 >>> >>>>
EXPRESSION >>>> >>>>> >>> 0> >1 >>>
>>>> EXPRESSION >>>>> >> 0> >2 >>>
>>>> EXPRESSION >>> >>>>> >>>>>>>
>3 >>> >>> >>>.
>>>>>>
>>>> >>>>>> >>>> >>>>>>
>>>> >>>>>>>> >>>> >>>>>.
>>>>>>> >> >>>>>>>
>>>> >> >>>>>> >>>: bug-coreutils@gnu.org
>>>> GNU coreutils >>>>>>>:
>>>>>> >>>> >>>>>>>>
>>>>>>> >>>:
>>>> >> >> >>>>> >>>>> >>>
>>>> >>>>>
>>>> >>>>> (C) 2026 >>>>>
>>>>>>>>> >>>>> (Free Software Foundation,
Inc.). >>>>> GPLv3+: GNU GPL >>>>>>> 3 >>
>>>>. .
>>> >>>>>> >>: >>> >> >>
>>>>>> >>>>>> >>>>>>. >>
>>>> >> >>>>> >>> >>>>>
>>>> >>>> >> >>>>>>>.
>>>> >>>>>
>>>>>>> >>>>>>
>> >>>> >>>>>> >>>: info '(coreutils)
expr invocation'
>>>>>
>>>>>> >>> >>>>>> >>
>>>>>> >>>>>> >>>>
>>>>>>>
>>> >>>>>>> >> >>>>>
>>>>>>> >>>> >>>> >>>
>>>>>> >>>>>>> 3
>> >> >>>>
>>>>>>> >>> >>>> >>>>
>>>>>. >> >>>> >> >>>>>>.
>>> >>>> >> >>>>> >> >>>>>
>>>> >>>>>> >>>> >>>>
>>>>> >>>> >>>>>>>> >>>
>>>>> >>>> >>>>>>>>>:
.
GNU coreutils 9.11 >>>>> 2026 EXPR(1)