print files of a directory

print.sh

#!/bin/sh 
LPRCMD='lpr -o media=Custom.100x162mm'
#LPRCMD=echo

# onefile number filename
onefile()  {
    $LPRCMD -#$1 $2
    mv $2 printed
} 

allfiles() {
    echo .
    files=`ls *.png`
    sleep 1
    for file in $files
    do  
#       if [ $file !=  '*_*_x?.png' ] 
        case $file in 
            *_*_x4.png ) onefile 4 $file ; ;; 
            *_*_x3.png ) onefile 3 $file ; ;;
            *_*_x2.png ) onefile 2 $file ; ;;
            *_*_x1.png ) onefile 1 $file ; ;;
        esac
    done
} 

crazy()  {
    all=`echo *zoo`
    for i in $all ; do echo $i ; done ; exit
} 

# main 
touch do-not-delete-this-empty-file.png

while  [ 1 ] 
do 
    allfiles
    sleep 10
done