Hi everyone,

I have thousands of html files that I need to modify and do not feel like doing it manually. So I want to use a linux script to make the change, but I can't figure out how to do it with sed.

I need to add a <br> into a line where the line to match spans over two lines.

Find:
<script type="text/javascript"><!--
google_ad_client

Replace with:
<br><script type="text/javascript"><!--
google_ad_client

How can I find a match on two lines and then insert the <br> at the beginning of the first line?
Any help would be greatly appreciated.
Thanks
Andy

From my personal collection. Not sure what its going to do for you tho,....




nmap commands
nmap --reason 192.168.1.1
nmap --packet-trace 192.168.1.1
nmap --iflist

find name of glibc's dynamic linker
readelf -l /bin/bash | grep interpreter

get urls from website
lynx -dump -listonly http://www.linuxfromscratch.org/lfs/.../packages.html

download all urls from website
lynx -dump -listonly -nonumbers http://www.linuxfromscratch.org | xargs -n1 wget
or
lynx -dump -listonly -nonumbers http://www.linuxfromscratch.org | egrep '(\.xz|\.bz2|\.gz|\.tar)' | xargs -n1 wget

debug filesystem
debugfs

make multiple directories
mkdir somedirectory/{this that other}

dd with progress
dd if=/dev/zero | pv | dd of=/dev/somedrive

repeat last command but change word1 to word2
^word1^word2^

remove trailing date from sql files
for f in *.sql; do
mv -- "$f" "${f%%-*}.sql"

Have a look at this:If that does what you want/need at sed's -i flag to make the canges in-place.

BTW: I've shortened the first search string to <script type=. If you do need the whole string, don'ty forget to escape the / . I.E.: /<script type="text\/javascript"><!--/

@szboardstretcher: Wrong thread??

druuna, your command adds the <br> at the beginning of the line, but I need it to be in front of the search string, because the string sometimes appears within a line. How can I get it to be put right in front of the search string...

Find:
<script type="text/javascript"><!--
google_ad_client
in:
bla bla bla <script type="text/javascript"><!--
google_ad_client

Replace with:
<br><script type="text/javascript"><!--
google_ad_client

Result:
bla bla bla <br><script type="text/javascript"><!--
google_ad_client

You should have included this in your original post

Give this a try:Test run:

This is an adaptation of druuna's sed
s/^/<br>/
substitute 'beginning of line' with <br>
changed to
s/<script/<br><script/

substitute <script with <br><script

as long as your bah bla bla does not contain <script it should do what you need

edit:
druuna's revised sed is better than mine, as it does not suffer the above 'restriction'

edit2:
as pointed out by druuna, both have same restriction ( both match first occurrence of <script )

1 members found this post helpful.

@Firerat: Simpler and thus better then mine!

doesn't yours handle the 'random' string before <script better than mine?

Hi andrew777,

Although this is my first attempt for answer in this forum but if I am catching your problem correct then file should be like this as below :
<script type="text/javascript"><!--
google_ad_client
bla bla bla <script type="text/javascript"><!--
google_ad_client
<script type="text/javascript"><!--
google_ad_client
bla bla bla <script type="text/javascript"><!--

So if you write below line I hope that can give you Desired pattern :
************************************
sed 's/<script/<br><script/g'
************************************

eg:
cat > p1.txt
<script type="text/javascript"><!--
google_ad_client
bla bla bla <script type="text/javascript"><!--
google_ad_client
<script type="text/javascript"><!--
google_ad_client
bla bla bla <script type="text/javascript"><!--
crtl+c

cat p1.txt | sed 's/<script/<br><script/g' -----> Command
Output :
<br><script type="text/javascript"><!--
google_ad_client
bla bla bla <br><script type="text/javascript"><!--
google_ad_client
<br><script type="text/javascript"><!--
google_ad_client
bla bla bla <br><script type="text/javascript"><!--

I don't think so. Even if <script type= appears multiple times on one line, you did not use the g flag, thus only the first one would be changed.