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Old 10-09-2009, 04:40 PM   #1
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Registered: May 2007
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help - how do i run a multi-line sed command in perl?

hey everyone,

I'm writing a little perl script that is editing all my .php files and inserting a google-analytics piece of code before the </body> tag.

the sed command works just find from command line, and is such :

sed '/<\/body>/ i\
<script type="text/javascript"> \
var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); \
document.write(unescape("%3Cscript src='" + gaJsHost + "' type='text/javascript'%3E%3C/script%3E")); \
</script> \
<script type="text/javascript"> \
try { \
var pageTracker = _gat._getTracker("UA-10500631-2"); \
pageTracker._trackPageview \
} catch(err) {}</script>
' MyPage.php
this works fine, however, how am I supposed to execute this in a perl script? I can't put it in a double quoted string, or a single quoted string, because the command contains both double and single quotes. Also, it spans multiple lines...

I have tried putting it in backticks over multiple lines just as is, that doesn't work. i've take out all the spaces and the '\' and made it a single, really long one line command and it doesn't work.

I'm at a loss, if anyone can show me what to do it would be really appreciated... this is the last little bit of the script, so any help is greatly appreciated!
Old 10-09-2009, 06:53 PM   #2
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you don't have to execute that piece of sed code in Perl. You can do what that sed does with Perl as well.. either s/// or find the index where </body> lies and add text after it.

Last edited by ghostdog74; 10-09-2009 at 06:56 PM.
Old 10-09-2009, 07:11 PM   #3
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Registered: May 2007
Posts: 12

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ah, very cool.

i'll go look at the s///.

ya i was going to avoid parsing the script in perl and adding the text because i already had a quick little sed command.

thanks, i'll check out s///.
much appreciated.


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