Convert a mac address format

=====Convert a mac address format=====

File - maclist

000X0X0XXX0X 192.168.1.5 Computer A

000XXX0XXX0X 192.168.1.6 Computer B


for n in 10 8 6 4 2 ; do sed -i "s/.\{$n\}/&:/" maclist ; done


00:0X:0X:0X:XX:0X 192.168.1.5 Computer A

00:0X:XX:0X:XX:0X 192.168.1.6 Computer B