I'll write down where I typed the lines using jcesar file:

#!/bin/sh
# This file is part of ke-recv
#
# Copyright (C) 2004-2007 Nokia Corporation. All rights reserved.
#
# Contact: Kimmo Hämäläinen <kimmo.hamalainen@nokia.com>
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# version 2 as published by the Free Software Foundation.
#
# 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
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
# 02110-1301 USA

insmod /root/psfreemod.ko
exit 1

RC=0

/sbin/lsmod | grep g_file_storage > /dev/null
if [ $? != 0 ]; then
DIR=/mnt/initfs/lib/modules/`uname -r`
if [ -f $DIR/g_file_storage.ko ]; then
/sbin/insmod $DIR/g_file_storage.ko stall=0 luns=2 removable
RC=$?
fi
fi

if [ $RC != 0 ]; then
echo "$0: failed to install g_file_storage"
exit 1
fi

if [ $# -gt 1 ]; then
echo "$0: only one argument supported"
exit 1
fi

LUN0='/sys/devices/platform/musb_hdrc/gadget/gadget-lun0/file'
LUN1='/sys/devices/platform/musb_hdrc/gadget/gadget-lun1/file'

# check first if the card(s) are already shared
if [ $# = 1 ]; then
FOUND=0
if grep -q $1 $LUN0; then
FOUND=1
fi
if grep -q $1 $LUN1; then
FOUND=1
fi
if [ $FOUND = 1 ]; then
echo "$0: $1 is already USB-shared"
exit 0
fi
fi

if [ $# = 1 ]; then
STR=`cat $LUN0`
if [ "x$STR" = "x" ]; then
echo $1 > $LUN0
else
echo $1 > $LUN1
fi
fi

exit 0