Famous Awk One-Liners Explained, Part II: Text Conversion and Substitution

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October 09, 2011, 14:17 
perl -lne '
 if (m|^(\d+),\d+:\d+/\d+|) { $n = $1; print; }
 elsif (m|^,\d+:\d+|) { print $n . $_; }
 else { print }
'
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