printf "%X%X%X%X\n",$1,$2,$3,$4 Is going to cause you (or someone downstream of you who happens to have a different IP address) no end of grief. I think you'll be happier with   printf "%02X%02X%02X%02X\n",$1,$2,$3,$4

In reply to Re: extracting variables from regex by dws
in thread extracting variables from regex by Anonymous Monk

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