So, I created a nice little script to take care of all of that.  wpthemeget will take a download URL from the WordPress Themes directory (in the format of http://(www.)wordpress.org/extend/themes/download/themename.ver.zip (or .tar.gz, or .tgz)), and will download, unarchive, chown, and remove the downloaded file, with no muss or fuss...  The output?:

root@fyre [.../wp-content/themes]# wpthemeget http://wordpress.org/extend/themes/                                        download/motion.1.0.4.zip
Downloading theme motion.1.0.4.zip...
Theme is a zip archive...
Unzipping... [COMPLETE]
...Removing downloaded archive file... removed `motion.1.0.4.zip'
...Chowning files... [COMPLETE]
...Installation Complete!

No muss, no fuss. The only caveat is that you have to be in your themes directory when you run it.  Future versions probably won't have this requirement, but hey, I hacked this out when I was barely awake, on heavy medication, and repeatedly falling asleep at the keyboard.  At one point, I had to delete something like 40 lines of "zzzzzzzzzzz......" because I fell asleep with my finger on the key.  Fortunately, vi treated it as all one paragraph so '<esc> dd' did the job.  The code for this little script is after the break.  Grab it, chmod it to exec, and drop it in /usr/local/bin, and it'll be good to go anywhere on your system, for all your blogs.  Happy blogging!

# wpthemeget - WordPress Theme Installer
# by: Eric Scalf -- @ericscalf.com
# Licensed under SPL (Scalf Public License) v.10
# You are licensed to take, use, and modify this script as you wish, provided
# you give attribution to the original author, and do not use the script for commercial use
# or monetary gain, without first obtaining permission from the original author.
# failure to do so constitutes a breach of license, and you agree that each breach of license
# incurs a fine of $15,000 USD payable to the original author.
#Non-commercial use of this script is encouraged, as is non-commercial distribution.
#
#!/bin/bash
if [ -z "$1" ]
then
echo "You must enter an URL for theme download..."
echo "The scrit is called thus:"
echo $0 "<url>"
echo
exit 9
fi

echo -n "Downloading theme "
echo $(echo "http://wordpress.org/extend/themes/download/motion.1.0.4.zip" | cut -d/ -f7)"..."
wget $1 > /dev/null 2>&1
if [ -z $(echo "${1}" | egrep tar[.]gz\|tgz) ]
then
echo "Theme is a zip archive..."
ZFILE=$(echo "http://wordpress.org/extend/themes/download/motion.1.0.4.zip" | cut -d/ -f7)
echo -n "Unzipping... "
unzip ${ZFILE} > /dev/null
echo "[COMPLETE]"
echo -n "...Removing downloaded archive file..."
rm -fv ${ZFILE}
echo -n "...Chowning files... "
TUSER=$(echo ${PWD} | cut -d/ -f3)
chown -R ${TUSER}.${TUSER} * > /dev/null
echo "[COMPLETE]"
echo "...Installation Complete!"
echo ""
exit 0
else
echo "Theme is a .tar.gz or .tgz archive..."
ZFILE=$(echo "http://wordpress.org/extend/themes/download/motion.1.0.4.zip" | cut -d/ -f7)
echo -n "Unarchiving... "
tar -xzf ${ZFILE} > /dev/null
echo "[COMPLETE]"
echo -n "...Removing downloaded archive file... "
rm -fv ${ZFILE}
echo -n "...Chowning files... "
TUSER=$(echo ${PWD} | cut -d/ -f3)
chown -R ${TUSER}/${TUSER} * > /dev/null
echo "[COMPLETE]"
echo "...Installation Complete!"
echo ""
exit 0
fi

#!/bin/bash
###############################################
# CLEAN MAIL #
# v0.1 #
# #
# Cleans the mail from default accounts based #
# on cPanel usernames. Create a file in /root #
# called 'doit'. Add one cPanel username per #
# line. That should do nicely. Oh, this will #
# take a while, so run the sucker in screen, #
# mkay, Batman? #
###############################################

# Some dedis have LS_OPTIONS include -a...
# that would be bad for this script.
# so, we reset it.
LS_OPTIONS='-A'

# start the loop...
for i in `cat /root/doit`
do
# Delete from the new folder.
cd /home/$i/mail/new
# can't rm if there's too many, and by using
# an ls and awk, we avoid another loop.
ls -l | awk '{print "rm -fv "$9}'|bash
# Delete from the cur folder.
cd /home/$i/mail/cur
# Comment repetition carefully avoided, here
ls -l | awk '{print "rm -fv "$9}'|bash
done
# NINJAMOJO!

It's simple. Get a list of cPanel usernames, one per line, create a file in /root called 'doit', and slap the usernames in there.  Then, 'bash cleanmail'.

There are two primary schools of thought about this... One statest that $RANDOM is random at all times.  Another than $RANDOM is not random enough, unless seeded.  Therefore, I've created this script to test on both schools of thought.  To test with $RANDOM seeded, uncommend the second line. This seeds $RANDOM off of the pid of the script. Otherwise, $RANDOM is untested.

#!/bin/bash
#RANDOM=$$
RANDTEST=0
DOWHILE=1
LIMIT=$1
while [ "${DOWHILE}" -lt "${LIMIT}" ]
do
RANDTEST=${RANDOM}
if [ "${RANDTEST}" -eq "${RANDOM}" ]
then
echo "MATCH! (...on ${DOWHILE})"
fi
let "DOWHILE = ${DOWHILE} + 1"
done

I haven't had the time to put it through serious paces, but tonight I'll open a terminal on my desktop (ubuntu), and let it run for a few million loops.  We'll see what comes up.