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Date: Thu, 25 Nov 2010 15:16:15 +0100
From: Dirk Fassbender <dirk DOT fassbender AT arcor DOT de>
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To: cygwin AT cygwin DOT com
Subject: Re: Portable Cygwin: replacing drivename in a text file
References: <4CEE6175 DOT 2030805 AT bonhard DOT uklinux DOT net> <4CEE64C5 DOT 2080007 AT gremwell DOT com>
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Am 25.11.2010 14:29, schrieb Alexandre Bezroutchko:
> Hi Fergus,
>
> The problem is $HOME contains '/' character used as delimited in 
> regex. You need to escape it first:
>
> HOME_ESCAPED=`echo "$HOME" | sed 's#/#\\\\/#g'`
> echo 123 | sed "s/2/$HOME_ESCAPED/g"
>
> It is not cygwin-specific.
>
> Cheers,
> Alex
> www.gremwell.com
>
> On 11/25/2010 02:15 PM, Fergus wrote:
>>> I can't get the syntax quite right.
>>> Can anybody help, please? Thank you very much.
>>
>> Thanks very much indeed for various suggestions, much appreciated. I
>> guess by yakking on about "drivename" I moved the focus of my question
>> to its practical application and thereby managed to blur things. My real
>> question is
>>
>> Given the string 123 how can I use sed to change it to 1$HOME3 or, in my
>> case, 1/home/user3. Various combinations of ' " and ` (also arbitrary
>> separators) all fail as in
>>
>> echo 123 | sed 's/2/"$HOME"/g'
>> echo 123 | sed 's/2/`$HOME`/g'
>> echo 123 | sed "s/2/'"$HOME"'/g"
>> echo 123 | sed 's/2/@$HOME@/g'
>>
>> Thank you (again).
>>
>> Fergus
>>
>>
>>
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>

Hello Fergus,

you can use a different separator in the sed command.
You can use the following line

   echo 123 | sed "s%2%${HOME}%g"

Regards
Dirk


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