Adding new lines in XML file

Question

I have a bunch of XML-files that all start with the XML-declaration

<?xml version="1.0" encoding="UTF-8"?>

After the final ">" it just goes on directly with the start of the following tag - like this: <?xml version="1.0" encoding="UTF-8"?><tag>

I would like to split it there to make a new line followed by another new line. Like this:

<?xml version="1.0" encoding="UTF-8"?>
New line
New line
<tag>

How could this be done?

Many thanks in advance:-)

/Paul

Arjun Mathew Dan · Accepted Answer · 2015-06-01 08:42:26Z

2

With sed:

AMD$ sed 's/<?xml version="1.0" encoding="UTF-8"?>/&\n\n\n/' File
<?xml version="1.0" encoding="UTF-8"?>


<tag>

Just replace the pattern <?xml version="1.0" encoding="UTF-8"?> with the same pattern followed by 3 newlines (this will create 2 newlines before <tag>.

Use sed -i.bak 's/<?xml version="1.0" encoding="UTF-8"?>/&\n\n\n/' File for inplace substitution.

answered Jun 1, 2015 at 8:42

Arjun Mathew Dan

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1 Comment

Paul Bergström Over a year ago

This worked like a charm. Huge thanks. I wrapped it in a for loop then I was done.

NeronLeVelu · Accepted Answer · 2015-06-01 09:14:28Z

0

based on your definition (start with) and content

sed '1 {
   /<[?]xml/ {
      s/<tag>//
      a \
new line 1 (whatever also just a \n like "new line 2") \
\
<tag>
      }
   }' YourFile

Adapt the line using a append with free text (new line are \ char) with a bit of security (take only 1st line and starting with ?xml)
use -i for inline modification on GNU sed

answered Jun 1, 2015 at 9:14

NeronLeVelu

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