perl -ne 'if (/(\d+(\.\d+)?)$/) {print $1, "\n"}' file1 file2

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That picks up numbers at the end of the line. If you want the last number in the line (ignoring possible trailing text) throw in \D* before the $.

In reply to RE (tilly) 3: Why regular expression so hard?! by tilly
in thread Why regular expression so hard?! by Anonymous Monk

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