Hi,
i have a very simple problem to solve for analyzing ASCII data file.

My files are obtained as output of awk processing and look this:
they have a certain number of lines (say 10) and only two columns, one with "average:" and the other with "number".
Well, i have to plot the numbers in the second column with respect to another set of values to insert in a column before the second, and then i have to draw one column with respect to the other (i already know how to do this using gnuplot).
They'd look like this after manipulation:


Probably there are some perl scripts to do this, in case address me where to find them.

Thank you in advance!

say file f1 has

average: 4.216
average: 9.33867
average: 10.53893
...
...

and file f2 has
3.4
4.6
10.8

then cut -d":" f1 | paste f2 -
will give you the output
3.4 4.216
4.6 9.33867
10.8 10.53893
...
...

tell me if you are still interested in a perl script (I can cook one for you)

thanks it works,

but now i want to redirect standard output of this command:
to a file, say f3.
Is this attempt correct?
unfortunately i get only a file with the first column of f2 in it.

Any idea?

cut -d":" --fields=2 f1 | paste f2 - > f3
you missed the -d":" to get only the number part in f1 and also the -

thank you!
it works now