copiar_usb.bash

#!/bin/bash

# Copyright (C) 2012 Quiliro Ordóñez and IgnorantGuru
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public
# License along with this program.If not, see
# <http://www.gnu.org/licenses/>.
#
# http://igurublog.wordpress.com
# quiliro [at] fsfla [dot] org
#
#
# Instructions to replicate:
#
# Copy the operating system to another USB memory by changing to the
# directory where the image is and executing this command:
# dd if=bom_compartilhar.img of=/dev/sdb
# where sdb is the device corresponding to the destination USB memory.
# You should type:
# mount
#
# to discover which devices are currently mounted and deduce which one
# is you destination USB memory. Then unmount the destination USB
# memory and proceed to copy the operating system.
#
# Configure Num Lock to OFF in BIOS.
#
# Note: If you didn't copy the operating system from my image, you
# should install the necesary packages. On Parabola GNU, the command
# is:
# pacman -S udevil rsync dosfstools sudo
#
# In order to start this script on boot, make it executable with:
# chmod u+x copiar_usb.bash
#
# and at the end of Parabola's /etc/rc.local file, add:
# devmon --exec-on-drive "/home/bom/copiar_usb.bash %f %d" &
# setleds -num +caps -scroll < /dev/tty1 &
#
# Keep hacking this script and let us know your progress!
#

keyboard="/dev/tty1"

echo
echo "Changing Caps Lock to OFF"
setleds -caps < $keyboard

native_path=`udevil --show-info $1 | grep "^  native-path:" | sed 's/^  native-path: *\(.*\) */\1/'`
usb_port="${native_path##*/usb[[:digit:]]/}"
echo
echo "native_path is " $native_path
echo "usb_port is " $usb_port
usb_port="${usb_port%%/*}"
echo "Now usb_port is " $usb_port
echo

echo "%f device filesystem - is " $1
echo "%d mount directory - is " $2
echo

case "$usb_port" in

    "1-1" )
    echo
    echo "Changing Num Lock to ON"
    setleds +num < $keyboard

## One attempt at erasing the recycle bin:
#   echo "Testing if enough space is left on the device"
#   contents="du -s /home/bom/bom_compartilhar"
#   (( $( read -d '' -ra df < <(LC_ALL=C df -P "$1" ); echo "${df[10]}" ) < contents)) && echo rm -rf "$2"/.Trash*;
#
## Another attempt at erasing the recycle bin:
#   free_space=$(df | grep $1 | awk '{ print '$4'; }')
#   if [ $contents -lt $free_space ]; then
#     echo "Not enough free space on $2. Erasing Trash bin."
#     find $2 -name ".Trash*" -exec rm -rf {} \;
#   fi

    echo
        echo "Downloading to device $1 on port $usb_port mounted on $2"
    echo
        rsync -a /home/bom/bom_compartilhar "$2"/
        ;;

    "2-1" )
    echo
    echo "Changing Scroll Lock to ON"
    setleds +scroll < $keyboard
    echo
        echo "Uploading from device $1 on port $usb_port mounted on $2"
    echo
        rsync -a "$2"/bom_compartilhar /home/bom/
        ;;

    "" )
        echo "usb port for device \"$1\" could not be determined"
        exit 1
        ;;

    * )
        echo "usb port $usb_port for device $1 ignored"

esac

devmon --unmount $1
echo
echo "Changing Caps Lock to ON and the others to OFF"
setleds -num +caps -scroll < $keyboard