Copy or delete macro

[zscw1]

I have a number of text files that average between 100k and 500k. Example text
<OTURN>DataId=3001559&Version=1</OTURN>
<OTSubType>749</OTSubType>
<OTLocation>1539739 2952416 3001559 </OTLocation>
<OTCurrentVersion>TRUE</OTCurrentVersion>
<OTEmailSubject>CIS: watch-process suspect process issues</OTEmailSubject>

the above will repeat but listing different " DataId=###### "

What I'm trying to do is either delete everything except the DataId values or copy the DataId values to a new file. In either case the values seperated by a comma.

Can I do this with a macro ?

[ben_josephs]

Mark all the lines containing DataId= :
Search | Find... (<F5>):

Find what: DataId=

Mark All

Copy all the marked lines:
Edit | Copy Other | Bookmarked Lines

Paste them into another document.

In the other document:
Search | Replace... (<F8>):

Find what: .*DataId=([0-9]+).*\n
Replace with: \1,

[X] Regular expression

Replace All

This assumes you are using Posix regular expression syntax:

Configure | Preferences | Editor

[X] Use POSIX regular expression syntax