Thread: testing correct execution of commands inside a script that executes ftp

I have a script like this:

sync
SRC=/home/_My/Target/etc
HOST='10.x.y.z
USER='user'
PASSWD='passwd'



ftp -n $HOST <<END_SCRIPT
quote USER $USER
quote PASS $PASSWD
verbose
bell
binary


cd /fw/user

lcd $SRC
put file.xml
put web.xml

lcd $SRC/targetScripts
prompt
mput *
prompt



quit
END_SCRIPT

if test $? -eq 0
then echo OK
else echo ERROR!! error code = $?
fi

echo install completed

exit 0

It executes correctly but the question is:

after a shell command inside the script i can test its correct execution by testing $?
but how to do it after each single command i give to ftp??

Please help me!!
I tested the fact that if a single ftp command fails $? at the end doesn't tell it (it is 0)