[vox-tech] Changing data with awk

[Leo Rainer]

In awk you can directly modify individual fields so this should work:

   awk -F^ '{$6=gensub(/\r/,"<cr>","",$6); print}' test.dat

         ...leo

At 03:36 PM 6/4/04, Mark K. Kim wrote:
>Unfortunately that wouldn't work since Richard wants to modify the column
>in the file, not strip it out at the same time he modifies it...  Unless
>you know of some way to re-insert the modified column back into the file
>(I don't.)  Good try, though.
>
>I'm not an awk expert but I'd guess you could do something like:
>
>   awk -F^ '{$6=gensub(/\r/,"<cr>","",$6);
>            printf("%s^%s^%s^%s^%s^%s\n",$1,$2,$3,$4,$5,$6)}' test.dat
>
>I'm sure someone's got a better idea that putting all those %s's...
>
>-Mark
>
>PS: Then there's PERL... =P
>
>
>On Fri, 4 Jun 2004, Dylan Beaudette wrote:
>
> > > I have a large flat file generated by SQL Loader that I'd like to mess
> > > around with; specifically, I'd like to replace all of the carriage 
> returns
> > > in one field with some other character, since they're messing up my data
> > > load.
> > >
> > > I figured I'd use awk, since it's a pretty powerful little tool for
> > > getting right to the data.  If I use:
> > >
> > > $ awk -F^ {print $6} test.dat
> > >
> > > I get the field that I want.  But how do I change the characters in that
> > > field and replace them in test.dat?
> >
> >
> > i recently had a similar problem: trying to convert
> > this:
> > 1<CR>
> > 2<CR>
> > 3<CR>
> > ...
> >
> > into this: 1, 2, 3...
> >
> > here is how i did it:
> >
> > append a comma+space to the end of each line with sed
> > then remove each CR using tr:
> >
> > sed -e 's/$/, /g' input_file | tr -d "\n" > output_file
> >
> > so something like this might do the trick:
> >
> > awk -F^ {print $6} test.dat | sed -e 's/$/, /g' | tr -d "\n" > output_file
> >
> >
> > .. you would be left with one column of data that would have to be
> > re-instered into the DB, or added back to the original file.
> >
> > the command 'paste' might be helpful for appending the data to the
> > original...
> >
> >
> > good luck!
> >
> > Dylan
> >
> >
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> >
>
>--
>Mark K. Kim
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