check file

check-file-input.sh

# check if param 1 is not empty and if the file exists
if [ -z $1 ] ; then
    echo "Param 1 missing. Must have a file to present."
    exit
else
    FILE="$1"
fi 

if [ ! -f $FILE ] ; then
   echo "File not found."
   exit
fi

# count lines 
file_lines_count=`cat $FILE | wc -l  `;