How to use grub regex?

How to use grub regex?

[Mat Troi]

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Hi,

I want to find out if a string contain certain word in grub.  I am thinking
about using grub regex.

Problem:
set string = (hd0,gpt1)/blah/blah
I want to find if cd is in string, how do I do that?


I tried "regex --set=foo 'cd' $string
echo $foo

There isn't anything in foo, so I guess my regex is not correct.

Thanks,
MT

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Re: How to use grub regex?

[Andrei Borzenkov]

17.09.2016 01:53, Mat Troi пишет:
> Hi,
> 
> I want to find out if a string contain certain word in grub.  I am thinking
> about using grub regex.
> 
> Problem:
> set string = (hd0,gpt1)/blah/blah
> I want to find if cd is in string, how do I do that?
> 
> 
> I tried "regex --set=foo 'cd' $string
> echo $foo
> 
> There isn't anything in foo, so I guess my regex is not correct.
> 

You search for 'cd' and there is no occurrence of 'cd' in string; why do
you expect anything to be returned?

Re: How to use grub regex?

[Bruno Doutriaux - ABCD Informatique]

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Hello,

what kind of behaviour do you search for in grub ? changing of directory or
what ?

Cordialement,
-----------------------------
Bruno DOUTRIAUX
03 27 40 22 66
06 58 60 39 53

<http://depannages-informatique.herobo.com>

2016-09-17 0:53 GMT+02:00 Mat Troi <mattroisang@gmail.com>:

> Hi,
>
> I want to find out if a string contain certain word in grub.  I am
> thinking about using grub regex.
>
> Problem:
> set string = (hd0,gpt1)/blah/blah
> I want to find if cd is in string, how do I do that?
>
>
> I tried "regex --set=foo 'cd' $string
> echo $foo
>
> There isn't anything in foo, so I guess my regex is not correct.
>
> Thanks,
> MT
>
> _______________________________________________
> Grub-devel mailing list
> Grub-devel@gnu.org
> https://lists.gnu.org/mailman/listinfo/grub-devel
>
>

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Re: How to use grub regex?

[Mat Troi]

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Hi,

No, I just want to find a word in a string.  I got it to work now.  Thanks
for your feedback.

grub>  set foo=(hd0,gpt1)
grub> echo $foo
(hd0,gpt1)

grub> *regexp -s word '^(.*),.*' $foo*
grub> *echo $word*
*(hd0*



grub> *regexp -s word '^.*(pt).*' $foo*
grub> *echo $word*
*pt*


Thanks,
MT





On Friday, September 16, 2016, Bruno Doutriaux - ABCD Informatique <
bruno.doutriaux@gmail.com> wrote:

> Hello,
>
> what kind of behaviour do you search for in grub ? changing of directory
> or what ?
>
> Cordialement,
> -----------------------------
> Bruno DOUTRIAUX
> 03 27 40 22 66
> 06 58 60 39 53
>
> <http://depannages-informatique.herobo.com>
>
> 2016-09-17 0:53 GMT+02:00 Mat Troi <mattroisang@gmail.com
> <javascript:_e(%7B%7D,'cvml','mattroisang@gmail.com');>>:
>
>> Hi,
>>
>> I want to find out if a string contain certain word in grub.  I am
>> thinking about using grub regex.
>>
>> Problem:
>> set string = (hd0,gpt1)/blah/blah
>> I want to find if cd is in string, how do I do that?
>>
>>
>> I tried "regex --set=foo 'cd' $string
>> echo $foo
>>
>> There isn't anything in foo, so I guess my regex is not correct.
>>
>> Thanks,
>> MT
>>
>> _______________________________________________
>> Grub-devel mailing list
>> Grub-devel@gnu.org <javascript:_e(%7B%7D,'cvml','Grub-devel@gnu.org');>
>> https://lists.gnu.org/mailman/listinfo/grub-devel
>>
>>
>

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