Unix Scripting for a simple menu

I am trying to create a small menu that prints, searchs for specific records, adds, and deletes records. I am a newbie so this might look really bad .These records are in one file called records seperated by ":". These contain first name ,surname, telephone no. etc.

here is some of my code

record_file=records
add_file=add
delete_file=delete

testfile = record_file
if testfile ! -f $ /home/alacritas/students/jdacosta/kxa254***1/pract/record_file ; then
echo "File 'record_file' Not Found"
exit
fi

testfile = add_file
if tesfile ! -f /home/alacritas/students/jdacosta/kxa254***1/pract/add_file ; then
echo "File 'add_file' Not Found"
exit
fi

testfile = delete_file
if testfile ! -f /home/alacritas/students/jdacosta/kxa254***1/pract/delete_file ; then
echo "File 'delete_record' Not Found"
exit
fi

while [ varname! = q ]
do
echo "************************"
echo " Employee Info Main Menu "
echo "************************"
echo " "
echo " 1 - Print all Current Records"
echo " 2 - Print all Current Records (formatted)"
echo " 3 - Print Names and Phone Numbers"
echo " 4 - Print Names and Phone Numbers (formatted)"
echo " 5 - Search for specific Record(s)"
echo " 6 - Add new Records"
echo " 7 - Delete Records"
echo " "
echo " q - Quit"
echo " "
echo " Please enter your selection"/c


read varname
case $varname in
[ 1 ]) echo " Your Selection: 'varname'"
cat $record_file |
awk -F":"'{print $1,$2,$3,$4,$5,$6,$7}'
echo " Press Enter to Continue "/c
read dummy;;

[ 2 ]) echo " Your Selection: 'varname'"
cat $record_file |
awk -F":"'{printf "%-10s %-10s %-2s %-12s %-3s %-15 %-10", $2,$3,$4,$1,$5,$6,$7}'
echo " Press Enter to Continue "/c
read dummy;;
[ 3 ]) echo " Your Selection: 'varname'"
cat $record_file |
awk -F":"'{print $2,$3,$1}'
echo " Press Enter to Continue "/c
read dummy;;
[ 4 ]) echo " Your Selection: 'varname'"
cat $record_file |
awk -F":"'{printf "%-10s %-10s %-10s", $2,$3,$1}'
echo " Press Enter to Continue "/c
read dummy;;
[ 5 ])echo " Your Selection: 'varname'"
echo " Enter Keyword: 'keyword'"
cat $record_file |
grep -i
[ 6 ])$add_file;;
[ 7 ])$delete_file;;
[Q q ]) break;;
*) echo "Bad Option"
"") echo "Please choose Valid Option"
esac
done

Can somebody please help me with using grep and sed. Any alterrations will be much appriciated

for number 5 : the user inputs the surname of the staff and the whole record is printed out.

Please help

say, you need butter, bread and wine
how many times you go to store ?

what's that 'kxa254***1'
and 'if testfile ! -f $ /home/alacri....'
and what's 'testfile'
and: 'testfile = add_file'

realize:
i don't remember how the shell inperpretes:
[ 5 ])
note the spaces and brakets, i would write
5)
--------------
[ 5 ])echo " Your Selection: 'varname'"
echo " Enter Keyword: 'keyword'"
cat $record_file |
grep -i
## this statement has NO ending ';;' make nothing, is
hanging because 'grep' does not know what to do!
[Q q ]) break;; #i write this: [qQ])
*) echo "Bad Option"
"") echo "Please choose Valid Option" #this statement has NO chance to be reached,
a) missing ending ';;'
b) '*' has an higher priority
...
also note: 'cat xxx|grep abc' AND 'grep abc xxx' IS THE SAME, but unix.

you need a book!