Critics welcome a little Bash Script

Question

#!/bin/bash
new=`kdialog --inputbox "Whats the Name of the DataBase?"`
echo "CREATE DATABASE $new;" > new
echo "USE $new;" >> new
name="total"
function data {
multi=`kdialog --combobox "Select Data type;" "VARCHAR(100)" "INT" "TEXT" "BINARY" "VARBINARY" "TINYBLOB" "TINYTEXT" "BLOB" "MEDIUMBLOB" "MEDIUMTEXT" "LONGBLOB" "LONGTEXT"`
function create {
dat=`kdialog --inputbox "Title of First Data Field for Table $name" "total"`
data
echo "CREATE TABLE $name (id INT NOT NULL AUTO_INCREMENT PRIMARY KEY, $dat $multi, cur_timestamp TIMESTAMP(8));" >> new
add=`kdialog --radiolist "Select Number of Additional Fields For $name:" 0 "Zero" on 1 "One" off 2 "Two" off 3 "Three" off 4 "Four" off 5 "Five" off 6 "Six" off 7 "Seven" off`
function mod {
if [ $add -gt '0' ]
then
while [ $add -gt 0 ]
do
col=`kdialog --inputbox "Column Heading for Table $name;"`
echo $col
data
echo "alter table $name add column $col $multi;" >> new
add=`expr $add - 1`
done
fi
echo "show columns FROM $name;" >> new
function extra {
mark=`kdialog --radiolist "Number additional Tables for $name:" 0 "Zero" on 1 "One" off 2 "Two" off 3 "Three" off 4 "Four" off 5 "Five" off 6 "Six" off 7 "Seven" off`
#echo $name
while [ $mark -gt 0 ]
do
name=`kdialog --inputbox "Extra Table Heading;"`
create
mod
mark=`expr $mark - 1`
title="|--| $name"
echo $title
mark2=`kdialog --radiolist "Number additional Tables for $name:" 0 "Zero" on 1 "One" off 2 "Two" off 3 "Three" off 4 "Four" off 5 "Five" off 6 "Six" off 7 "Seven" off`
while [ $mark2 -gt 0 ]
do
name=`kdialog --inputbox "Extra Table Heading;"`
create
mod
mark2=`expr $mark2 - 1`
title="-|- $name"
echo $title
done
done
title="|**| $name"
echo $title
create
name="incoming"
create
mod
title="|**| $name"
echo $title
extra
name="outgoing"
create
mod
title="|**| $name"
echo $title
extra
ans=`kdialog --password "Enter Password:" "******"`
#echo $ans
mysql -u root -p $ans < new
As the title suggests, I'm learning bash a little, now this creates 3 base tables in a mysql database with an optional 2 deep, maximum 7 tables for 2 of the base tables(I'm also looking at a way to link them further on down the line) using KDE kdialog boxes,
My first one is I cant seem to pass the variable to the mysql command, is this possible?
Also I'm missing error trapping, was hoping for a little feed back how I should tackle this(This is an area I need to work on)?

Answer 1

Thanks for the input guys.
Hadn't realised the back tick was on its way out looks like I've got to change a few more things than I thought, easier now to break the habit rather than later.
ans=$(kdialog --password "Enter Password:" "******"); would this be the correct syntax then? I also guess using this will give me the variable $? which I presume I could then use for error trapping. Like this
if [ $? = '0' ]
then
else
fi
Would this be the correct way, though presumably the neater way would be to wrap it in a function?
Makes sense when you got rid of the second echo with a new line.
Have thought about using a tmp file to hold the passwd just didn't really want to do it though. Also not quite sure how I'd amend it to the mysql command. Though thinking about it I presume I could make that earlier and place it at the beginning of the file being read in(Presuming it would work).