#!/bin/bash

# Updates an archive on your USB drive with *small* files that you have changed
# today.

# It does NOT clear out old files from the USB drive - use rm -rf for that.

# Copyleft 2005 by Rob Reid under the GNU Public License version 2.

# Suggested crontab:
#  # use /bin/tcsh to run commands, no matter what /etc/passwd says
#  SHELL=/bin/tcsh
#  #
#  # 10:25AM on weekdays
#  25 10 * * 1-5   $HOME/bin/updateusb
#  # 12:25PM on weekdays
#  25 12 * * 1-5   $HOME/bin/updateusb
#  # 3:25PM on weekdays
#  25 15 * * 1-5   $HOME/bin/updateusb

######################## Configuration variables ##########################

# Mount point of the destination drive.
usb="/media/usbdisk"

# Destination directory.
destdir="$usb/from/${HOST%%\.*}/dailyupdate/"

# Files larger than this (in kilobytes) will be ignored...
maxkb=400

# ...and so will these subdirectories of your home directory.
excludedirs=".galeon .mozilla .elinks .gconf .gconfd .adobe"

##################### End of configuration variables ######################

fc="find $HOME"
for ed in $excludedirs; do
    fc="$fc -path $HOME/$ed -prune -o"
done
fc="$fc -daystart -mtime -1 -size -${maxkb}k -type f -print"

fcres=$($fc)

# Don't check for errors; just let mount complain to the screen (or email if
# run by cron).  The most common error is usually just that the drive is
# already mounted.  (mount does use different return values but I'm too lazy to
# look up how to use them.)
mount $usb

for nf in $fcres; do
    rsync -ptgR $nf $destdir
done

# Forces a flush.
umount $usb