A little more sophisticated script than the former bash menu example to get some arguments from command line.
#!/bin/bash
while getopts "u:p:" opt; do
case $opt in
u)
echo "-u was triggered, Parameter: $OPTARG"
dbuser="$OPTARG"
;;
p)
echo "-p was triggered, Parameter: $OPTARG"
dbpass="$OPTARG"
;;
\?)
echo "Invalid option: -$OPTARG"
exit 1
;;
:)
echo "Option -$OPTARG requires an argument."
exit 1
;;
esac
done
# Clear all options and reset the command line
shift $(( OPTIND -1 ))
# First parameter
if [ -z "$1" ]; then
echo "usage: $0 [-u name] [-p password] file"
exit
fi