Extract characters

[santhas]

Hi Gurus,

I am trying to separate char and numeric values from ex 12G in an awk script.
I want to convert 12G to 24g ( 12*2)g.Any clues pl?

Thanks

 

[Annihilannic]

Here is an awk solution, but its kind of clunky:

awk '
        {
                line=$0
                newline=""
                while(match(line,"[0-9]+")) {
                        newline=newline substr(line,1,RSTART-1) substr(line,RSTART,RLENGTH)*2
                        line=substr(line,RSTART+RLENGTH)
                }
                print newline line
        }
'

A much neater perl solution:

perl -pe '$_ =~ s/(\d+)/$1*2/eg;'

Annihilannic.