www.nhipsongcongnghe.net
tr a-z A-Z <$1 >$1.out
rm $1
mv $1.out $1
shift
done; }
lower () {
shift
for i
do
tr A-Z a-z <$1 >$1.out
rm $1
mv $1.out $1
shift
done; }
print () {
shift
for i
do
lpr $1
shift
done; }
usage_error () {
echo "$1 syntax is $1 <option> <input files>"
echo ""
echo "where option is one of the following"
echo "p -- to print frame files"
echo "u -- to save as uppercase"
echo "l -- to save as lowercase"; }
case $1
in
