On Fri, 26 Nov 2004 19:27:09 -0500, Anthony E. Greene wrote
> On 26-Nov-2004/17:37 -0600, Mike Vanecek <rh_list@xxxxxxxxxxxxx> wrote:
> >I have looked through my books and googled ... Tried serveral things
without
> >success ...
> >
> >I would like to run the output of a bash command that produces 1 field per
> >line output through sort and then output in 3 columns. I have looked at
> >printf, fmt, column, and so on.
> >
> >For example,
> >
> >rpm -qa | sort 2>&1 | column -c 2
> >
> >rpm -qa | sort | column -c 2
> >
> >Or say I have a file with a list of sorted names, for example,
> >[admin@www admin]$ rpm -qa | sort -o rpm.txt
> >
> >Then I want to output the file with
> >
> >column -c 2 rpm.txt
> >
>
> #!/usr/bin/perl
> #
> # Format STDIN into three tab-delimited columns
> #
> $colnum = 1;
> while ($line = <STDIN>) {
> chomp $line;
> if ($colnum < 3) {
> print "$line "; # The whitespace is a tab character.
> } else {
> print "$line\n";
> }
> }
>
> You could get fancy using perl's formatting features, but this quick$
> dirty should work for lines that are all of similar length, or for input
> in an application that easily parses tab-delimited data.
>
Thank you for the script. Another solution that I stumbled upon is to use pr,
e.g.,
rpm -qa | sort | pr --columns 3 -at type of thing.
It truncates the columns a bit, but ...
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