#!/bin/sh
#
#    myprog11 - script to backup multiple files
#
# Function totalit returns size of current argument in variable size
# and increments variable totalsize
totalit()
{
	if [ $totalsize ]; then
		:
	else
		totalsize=0
	fi
	size=`wc -c $1 | gawk '{print $1}'`
	totalsize=`expr $totalsize + $size`
}
if [ $# -le 1 ]; then
	echo -n  "Type some filenames please:  "
	read tocopy
else
	tocopy=$*
fi

for fyle in $tocopy
do
	echo "------------------ $fyle --------------"
	if [ ! -f $fyle ]; then
		echo "Not copied - is not a plain file"
		continue
	fi
	if [ ! -w $HOME/logback ]; then
		echo "Not able to write to output directory"
		echo $0 COMMAND ABORTED
		break
	fi
	cp $fyle $HOME/logback
	totalit $fyle
	echo "Backed up ......   size $size bytes "
done
echo "Total size of files backed up:  $totalsize"