Bash Virtualbox自定义脚本

Question

我是bash脚本的新手，但是我使用nano编辑器通过终端使用Ubuntu键入了这个，但我一直在密码验证部分出错。

以下代码：

echo Welcome
goto logon
logon()
{
echo Please enter password to use script...
read password
if $pass == "password"; then
goto root
else
goto exit
}

root()
{
echo Please enter password to grant access to root...
sudo -i
goto vbox
}

vbox()
{
echo Starting vbox ...
mount -t vboxsf Tarun /home/user/Tarun
if [ -f /home/user/Tarun/check.chk
then
echo  Folder successfully attached!
cd /home/user/Tarun
ls -l
else
echo Failed! Check vbox config...
goto exit
}

exit()
{
exit
fi
}