Just expanding upon your good answer to include the abbreviation 'Fig': 
perl -E 'my @f =("2013-06-01", "fig 1-1", "Fig. 2.2", "Figure. 89-9","
+Figure 12-8","Figure 1.2");
foreach (@f) {
  print "  $1\n" if /fig(?:ure)?\.?\s(\d+[-.,]\d+)/i;
}'
  1-1
  2.2
  89-9
  12-8
  1.2

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In reply to Re^2: how to do get digit numbers like -,.? by frozenwithjoy
in thread how to do get digit numbers like -,.? by virudinesh

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