[ale] sed & regex

[Bob Toxen]

You may want to get a copy of the book:

     Mastering Regular Expressions (2nd Edition)
     by Jeffrey Friedl
     O'Reilly
     2002

It covers not just grep, sed, and Perl but also the Dark Side.
I have a copy.

Bob Toxen
bob at verysecurelinux.com               [Please use for email to me]
http://www.verysecurelinux.com        [Network&Linux/Unix security consulting]
http://www.realworldlinuxsecurity.com [My book:"Real World Linux Security 2/e"]
Quality Linux & UNIX security and SysAdmin & software consulting since 1990.

"Microsoft: Unsafe at any clock speed!"
   -- Bob Toxen 10/03/2002

On Tue, Mar 30, 2004 at 11:42:04PM +0900, Keith Hopkins wrote:
> Hi folks,
> 
>   I hope someone can point me to the error of my ways....too difficult?  Ok, how about a hand at a regex problem?
> 
>   I have some xml files I'm trying to convert for local browsing.  "wget -m -k" almost does the trick, but the remaining files have this snippet left in them...
> 
> "handbook.xml?part" as part of an href.  The actual files have "?" in their names.  If I convert the href from "?" to "%3F" then my browser is all happy and finds the files (otherwise, it prints nasty errors).
> 
>   The question is, how to replace all the "?" with "%3F".  I tried `sed` since that seemed to be the natural solution, but it isn't working like I expected.
> 
>   I do this...
> 
> sed "s/handbook.xml\?/handbook.xml\%3F/" handbook.xml > handbook.html
> 
>   and sed really converts the string to "handbook.xml??"
> 
>   Where is the extra "?" coming from??
> 
>   Alternately, I tried
> sed "s/handbook.xml\?part/handbook.xml\%3Fpart/" handbook.xml > handbook.html
>   and that seems to work OK (for those lines that actually have "part" in them).
> 
> -- 
> Lost in Tokyo,
>   Keith
> 
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