pattern matching problem in sed

digitalbrutus · 08-19-2006, 02:17 PM

I need to write a script to delete a <VirtualHost>...</VirtualHost> entry of a particular domain from httpd.conf using sed or awq or anything.

I tried to do it with sed but the pattern was too complecated for me to understand and use. How do we match multiple line and remove those lines from a file using sed/awk. Plese help?

druuna · 08-19-2006, 02:22 PM

Hi,

Is this what you want:

sed -n '/<VirtualHost>/,/<\/VirtualHost>/!p' <infile>

Hope this helps.

kladizkov · 08-19-2006, 09:37 PM

sed -n '/<VirtualHost>/,/<\/VirtualHost>/!p' <infile>[/b]

That doesnt work. Actually iam looking for a search and replace command in sed, that is i can search for <VirtualHost>...</VirtualHost> and replace it with a space or null character

Tinkster · 08-20-2006, 12:11 AM

Code:

sed '/^<[Vv]irtual[Hh]ost.*>/, ^<\/[Vv]irtual[Hh]ost>/ d' httpd.conf

actually works

Just make sure you add some sensible stuff where it's red
so you don't wipe ALL of it. Inserting null or the likes
doesn't make sense, and empty virtual host definition gains
you nothing. If this is not what you want you could try
and just comment things out.

Code:

sed '/^<[Vv]irtual[Hh]ost.*>/, /^<\/[Vv]irtual[Hh]ost>/ s/^/# /' httpd.conf

Cheers,
Tink

druuna · 08-20-2006, 04:40 AM

Hi,

@kladizkov: My solution doesn't work for you, but you are not the OP. Yours is a different question altogether.

To avoid confusion please open a new thread if the question is different form the original one.