[opensuse] bash: how to get file extension

15 Jul 2013

      Hi everyone
How do I get the mp4 from this?
video_id="Robin Thicke - Blurred Lines ft. T.I.,
Pharrell-yyDUC1LUXSU.mp4"

I've tried these: 

ext=${video_title/*./}
ext=${FILENAME##*.}  
ext=$(echo "$video_title" | sed 's/^.*\.//')

The problem is the .'s

I want to ignore all .'s until the final one (not just for this string).

Thanks,
L x

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[opensuse] bash: how to get file extension

lynn