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From: Chris Faylor <cgf AT cygnus DOT com>
Date: Tue, 20 Jun 2000 13:47:22 -0400
To: cygwin AT sourceware DOT cygnus DOT com
Subject: Re: Bug of bash with sed operation ???
Message-ID: <20000620134722.A6785@cygnus.com>
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References: <394F8117 DOT EF7EEB1C AT cisco DOT com> <20000620104703 DOT A8791 AT cygnus DOT com> <394FA231 DOT 19A148C0 AT veritas DOT com>
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In-Reply-To: <394FA231.19A148C0@veritas.com>; from rmcgowan@veritas.com on Tue, Jun 20, 2000 at 09:56:17AM -0700

On Tue, Jun 20, 2000 at 09:56:17AM -0700, Bob McGowan wrote:
>Chris Faylor wrote:
>> 
>> On Tue, Jun 20, 2000 at 10:35:03AM -0400, Zhiguang Qian wrote:
>> >Hi,
>> >
>> >Here is the sample.
>> >
>> >>>export MY=\aaa\bbb.c
>> >>>echo $MY | sed -e 's#\\#\/#g'
>> >>> /aaa/bbb.c
>> >>>out=`echo $MY | sed -e 's#\\#\/#g'`
>> >>> sed: -e expression #1, char 8: Unterminated `s' command
>> >
>> >Try it.
>> 
>> I did.  Have you tried it on UNIX?  Same effect.  It's not a bug.
>> 
>> Your \\ is being eaten inside the ` ...  ` command.  You probably need
>> to double up on these when you are using them inside of backquotes (or
>> " style quotes for that matter).
>> 
>
>I tried it too, but things didn't work as described above, from line
>one.  After assigning to MY and doing a simple echo, bash printed:
>
>   aaabbb.c

Yup.  That's UNIX-shell 101. The \ is a quoting character.  If you want to
use an actual \ you have to use \\, just like in C.

cgf

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