Sed regex change of file

Question

I am (unsuccessfully) trying to substitute the database host entry in a Magento local.xml file (the connection string file).

The line is the following:

&         


        

Answer 1

With GNU sed:

sed 's|\(<host><!\[CDATA\[\).*\(\]\]></host>\)|\1lala\2|' file

or

sed -E 's|(<host><!\[CDATA\[).*(\]\]></host>)|\1lala\2|' file

Output:

<host><![CDATA[lala]]></host>