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newbe bash question ( grep processing)

so first of all hello everybody this is my first post
i am also new to linux so if possible be very clear and thx in advance

the problem
i have writen a bash script that gets a html file from a server(this is done with wget, no probs so far) . now i want to process this file( there is always a part(script) i want to delete).
the part i want to delete is a javascript( placed between <script> </script)
how can i do this
i know u can search the file and get the linenumbers with grep( problem here after the linenumbers theres also the line with text)

i think if i can solve the above problem so i only can get the numbers i would be able to write the rest of the program

quick version
how can i get only the first part( just the number198) of this line
198:<script>blblblablana</script>

thx in advance
bxp

Quote:

quick version
how can i get only the first part( just the number198) of this line
198:<script>blblblablana</script>

You can do that like this:

Code:

#!/bin/bash



LINE="198:<script>blblblablana</script>"

echo "${LINE%%:*}"

If you can rely on both the "<script>" and "</script>" tags to be on the same line, and also you don't need to preserve text before "<script>" and after "</script>", then you can do it easier in one go with grep:

Code:

grep -vi '<script>.*</script>' dummy.html

if the "<script>" and "</script>" tags can possibly occur on different lines, use 'sed' instead of 'grep'. then you can also preserve text before "<script>" and after "</script>".

Say, some html file ("dummy.html") looks like this:

Code:

<html>

blalbla

zzz<script>blblblablana</script>444

qweqw

<script>blblbla

asas

asas

blana</script>

123

</html>

Then this script:

Code:

#!/bin/bash



sed \

-e '/<script>.*<\/script>/{' \

-e 's/^\(.*\)<script>.*<\/script>\(.*\)$/\1 \2/' \

-e 'n' \

-e '}' \

-e 's/^\(.*\)<script>/\1/' \

-e 's/<\/script>\(.*\)$/\1/' \

dummy.html

...outputs:

Code:

<html>

blalbla

zzz 444

qweqw

blblbla

asas

asas

blana

123

</html>

thx for the excellent answer, sorry for the stupid question but everybody has to learn

greetings bxp