Shell Programming and Scripting

Hi,
I am new to Unix.
I have a file with three colomns ( a list of Names and Tel. Nr.)
*****************************
Name Firstname Tel.Nr.
Muster Hans 001 123 456 789
.. .. ..
.. .. ..
******************************

I need a script to do the following:
- Show all entries
- Search for entries.
- Add new entries.
- Edit existing entries.
- Delete existing entries.
- Rudimentary elimination of errors.
------------------------------------------

Anybody have something similar, i'll be very thankful to have it.

aqa

Can you please give an example of the final file how does it look like? This sounds like a project more than an urgent need.

And where is your effort? in other words, what script did you write, that is not working?

a sample code is given below - it doesn't cover all. I am not sure what exactly you are looking for. You may try the rest. before executing the script create a file named phone_book.

For the code to be good you need to perform all the input validations / exception handling...etc

#! /usr/bin/ksh
cnt=1
while test cnt -eq 1
do
echo "MENU"
echo "1. Show all entries"
echo "2. Search for entries"
echo "3. Add new entries"
echo "4. Edit existing entries"
echo "5. Delete existing entries"
echo "6. Rudimentary elimination of errors"
echo "0. Exit"
echo "enter your choice: \c"
read x
case $x in
1) echo "all entries"
echo "-----------------------------"
cat phone_book;;
2) echo "enter the telephone number"
read tel
echo "search results"
echo "-----------------------------"
cat phone_book | grep $tel;;
3) echo "enter name"
read name
echo "enter first name"
read fname
echo "enter tel number"
read telno
echo $name $fname $telno >> phone_book
echo "new entries have been added";;
0) exit;;
esac
done