a question regarding proper printf(3) formating and alignment

Dan Nelson dnelson at allantgroup.com
Wed Nov 17 22:41:42 UTC 2010

In the last episode (Nov 17), Karl Vogel said:
> >> In the last episode (Nov 17), Alexander Best said:
> A> i've looked at a lot of utilities in the bsd src tree and most of them
> A> seem to be doing something like this:
> A> Device          1M-blocks     Used    Avail Capacity
> A> /dev/label/swapfs     10239        0    10239     0%
> A> /dev/label/swap      8191        0     8191     0%
> A> Total               18431        0    18431     0%
> A> i'd like to learn of ways formatting the header so that it aligns
> A> properly, whether the device name is 10 chars long or 1000.
>    ports/textproc/align is a nifty perl script that'll do this for just
>    about any type of column-based input.  If you just want to fix "df" and
>    you know how long the longest device name is, try something like this:

Bad example, since df also auto-sizes its columns :)

I think /usr/bin/rs can do column auto-balancing, but every time I try to
make it do what I want, I fail.

	Dan Nelson
	dnelson at allantgroup.com

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