Viktor Rosenfeld wrote:
>
> Hi list,
>
> this one is for all the regexp, shell, and editing-experts...
How about us perl hackers, hunh?! Got sumpin' g'inst us, buddy!?
> Suppose I have a comma-seperated or tab-seperated file and I want
> to flip the lines and columns. So an input file like:
>
> a,1,A
> b,2,B
> c,3,C
>
> would be transformed into:
>
> a,b,c
> 1,2,3
> A,B,C
>
> Is there an fast and easy way of doing this? Ideally through the shell
> or with VIM. I would RTFM, but I have no clue which manual to read.
Well, you could use regexp in sed, or use an awk script, but if
I had only 3x3 matrices to transform, in text, I'd
perl -e 'for ($i=0;$i<3;++$i){<>;@entry = split ',';print
"$i[0],$i[1],$i[2]\n";}'
with a file directed into it, and stdout redirected to a file.
Matrixes with unpredetermined columns or rows become slightly
trickier, but only by 1) keeping track of the length/breadth, and
2) nesting another loop.
>
> TIA,
YWATF
(You're Welcome After The Fact)
