Search and Replace Linux

Question

I am trying to do the following search and replace, but for some reason it's not working. I am trying to replace:

require_once('

with

require_once($_SERVER['DOCUMENT_ROOT']/'

Those are the exact srings (slash and single quote included).

This is what I attempted, however I can't get it to work:

find ./ -type f -readable -writable -exec sed -i "s/require_once(\'/require_once($_SERVER['DOCUMENT_ROOT'] . \'\//g" {} \;

What am I doing wrong??

Do you get an error message? I think the problem is with the escaping of special characters. — alexkelbo
– alexkelbo, Commented Jan 10, 2013 at 18:31

kojiro · Accepted Answer · 2013-01-10 18:33:12Z

5

You need to escape the $ and / characters:

sed "s/require_once('/require_once(\$_SERVER['DOCUMENT_ROOT']\/'/g"

edited Jan 10, 2013 at 18:33

kojiro

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answered Jan 10, 2013 at 18:31

gregbeaty

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1 Comment

dwalter Over a year ago

One can use @ as delimiter for sed, so you do not need to escape /. e.g.: sed -e 's@/asd/@b@'. But you will still need to escape $.

tripleee · Accepted Answer · 2013-01-10 18:39:13Z

You need to backslash-escape the dollar sign within double quotes, otherwise the shell interpolates the (nonexistent) environment variable _SERVER, replacing it with an empty string.

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