I'm looking for a quick way to change the date format within an XML file from UTC (e.g. Fri, 18 Mar 2016 03:41:43 GMT) to an XPATH compliant format so that I can use XPATH date queries.

All the dates I need to change are nicely contained within <Last-Modified></Last-Modified> tags.

I have tried this... perl -pe 's/<Last-Modified>(.*)<\/Last-Modified>/`date -d \"$1\" \"+%s\"`/ge&&s/\n//' mydoc.xml

But despite the presence of the global flag, it only seems to change the first and not all instances within the doc ?

What am I missing ? ;-(

p.s. yes, I know epoch is not xpath but that was just for my test purposes

In reply to Global matching not working as expected by ForeverLearning

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