Printing based on following field

[segment]

Hey all something got me stumped...

I have a list of about 200 mac addresses in 0004F2061276 format. I need to enter the colon between:

00:04:F2:06:12:76 tried looking for everything but came up empty

perl -e 'print $i=pack(c5,(40*2),sqrt(7600),(unpack(c,Q)-3+1+3+3-7),oct(104),10,oct(101));'

 

[PHV]

A starting point:
echo '0004F2061276' | awk '{for(i=10;i>=2;i-=2)$0=substr($0,1,i)":"substr($0,i+1);print}'

Hope This Helps, PH.
Want to get great answers to your Tek-Tips questions? Have a look at FAQ219-2884 or FAQ181-2886

 

[segment]

Thanks PHV you rock. I was stuck on stupid going with this route:

while IFS="" read -r -- LINE; do LINE="${LINE/#([1-9])([0-9][0-9][!0-9])/\1:\2}"; LINE="${LINE/#([1-9][0-9])([0-9][0-9][!0-9])/\1:\2}"; print "${LINE}"; done < filename

perl -e 'print $i=pack(c5,(40*2),sqrt(7600),(unpack(c,Q)-3+1+3+3-7),oct(104),10,oct(101));'

 

[Annihilannic]

A sed alternative:

[tt]echo '0004F2061276' | sed 's/\(..\)/\1:/g;s/:$//'[/tt]

Annihilannic.

 

[p5wizard]

here's another solution using fold and tr:

$ MAC=0004F2061276
$ CMAC=$(echo "${MAC}\c"|fold -w2|tr '\n' ':')
$ echo $CMAC
00:04:F2:06:12:76


HTH,

p5wizard