Re: input redirect from a variable

[Dave Yost <Dave@Yost.com>]

Thanks.

<(foo) and =(foo) should be mentioned in the REDIRECTION section, where I would have found them.

Dave

At 12:15 PM +0200 2005-09-23, Mikael Magnusson wrote:
>On 9/23/05, Peter Stephenson <pws@csr.com> wrote:
>>
>> ------- Forwarded Message
>>
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>> Message-Id: <pdy98830623095bbf58c3401e47@[192.168.1.2]>
>> Date: Thu, 22 Sep 2005 13:30:00 -0700
>> To: Peter Stephenson <pws@csr.com>
>> From: Dave Yost <Dave@Yost.com>
>> Subject: input redirect from a variable
>> Content-Type: text/plain; charset="us-ascii" ; format="flowed"
>>
>> Hi.
>>
>> It seems to me that there should be a way to do something like this:
>>
>> foo1="$(...)"
>> foo2="$(...)"
>>
>> comm -3 <<<<$foo1 <<<<$foo2
>>
>> where the <<<$foo1 syntax says to output $foo1 to a tmp file, then
>> use that filenamne as the argument, then delete that file.
>>
>> Thanks
>>
>> Dave
>
>I use this function for comparing the hexdump of two files,
>hexdiff () {
>	diff -u <(hexdump "$1") <(hexdump "$2")
>}
>
>so in your case, what you want to do is comm -3 <(...) <(...)
>or if you really want
>foo1=$(...)
>foo2=$(...)
>comm -3 <(echo "$foo1") <(echo "$foo2")
>but that seems stupid :)
>Also note this syntax will provide pipes, if you use =(...) instead
>you will get temp files like you asked for.
>
>--
>Mikael Magnusson