[SLUG] quoting

From: Eben King (eben1@tampabay.rr.com)
Date: Fri Dec 16 2005 - 16:07:38 EST

OK, I'l having a quoting problem. Not people taking things out of context,
or using quotes without attribution, shell quoting. What I want is the "du
-sh"-style output, only sorted by size. The only way I can see to do that
is to get the "du -s"-style output, sort it, trim off the size, and call "du
-sh' on each one. Rather inefficient, but I don't see a better way.
(Sorting "du -sh"'s output will put "100M" before "200K".)

What I have is this:

#! /bin/bash
...
    case $1 in
        READABLE=human
        shift
    esac
...
case $READABLE in
...
    human)
    PP='cut -f 2- -d \ '
    set -x
esac

   du -s "$@" \
   | sort -$SORT_ARGS \
   | sed 's@ \./@ @' \
   | $PP ;;

Its output is:
[eben@pc eben]$ ddu -h /export/media/*
+ du -s /export/media/backgrounds /export/media/ferret-legging.txt
/export/media/images /export/media/midi /export/media/mod
/export/media/movie /export/media/mp3 /export/media/palette.64.gif
/export/media/palette.64.ppm /export/media/patterns
/export/media/root.cache.980907 /export/media/sounds /export/media/temp
+ sort -n
+ sed 's@ \./@ @'
+ cut -f 2- -d '\'
4 /export/media/palette.64.gif
4 /export/media/palette.64.ppm
4 /export/media/root.cache.980907
16 /export/media/ferret-legging.txt
442 /export/media/patterns
1413 /export/media/mod
16240 /export/media/midi
31731 /export/media/temp
159625 /export/media/sounds
422843 /export/media/backgrounds
1732338 /export/media/movie
4014387 /export/media/images
5605004 /export/media/mp3

It is ignoring the space in this case. I've tried putting the space
preceded by a backslash (in and out of $S), naked, in double quotes (ditto),
and in single quotes (ditto). I always get an error about -d needing a
single character; either that or it gets ignored.

What am I doing wrong, and what's the right way to do it? Thanks. 

-- 
-eben    ebQenW1@EtaRmpTabYayU.rIr.OcoPm    home.tampabay.rr.com/hactar

                Logic is a systematic method of coming to
                  the wrong conclusion with confidence.

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