need help...shell scripting...

srinivasmiriyalu · 04-16-2009, 07:42 AM

hi friends..
i newbiee to shell scripting..and i want to write a script...when i ran the script then it will ask questions one by one with mentioned options like a,b,c,d...atlast..it needs to display result also....
i dont no how to start and where to start...
pleas help me..
waiting for your valuable replies

Zmyrgel · 04-16-2009, 07:54 AM

You can make that kind of script easily with the help of a good tutorial.

colucix · 04-16-2009, 08:16 AM

It is a basic task for shell scripting. You definitively have to read a good tutorial, like that one suggested above. Take a look at the read statement. Using the -p option you can prompt the user with a question and offer some choice. An example:

Code:

#!/bin/bash 
read -p "Which fruit would you like?
   a. strawberry
   b. apple
   c. banana
   d. apricot
Do your choice: " ans

case $ans in
  a) fruit=strawberry ;;
  b) fruit=apple ;;
  c) fruit=banana ;;
  d) fruit=apricot ;;
esac

echo "You chose $fruit"

srinivasmiriyalu · 04-16-2009, 09:35 AM

thank you...thanks alot...
suppose i have 100 questions..and should i need to write all the questions
or can i use any database to store all the questions..

colucix · 04-16-2009, 11:04 AM

If you have the questions stored in a text file, you can embed the code in a while loop, which reads from a file line by line, for example:

Code:

while read line
do
  read -p "$line" ans
  <other commands here>
done < file.txt

where file.txt is the file containing the questions, one per line. If you have multiple lines as in the example of my previous post, you have to find a way to parse the file and read some lines together. It all depends on the format of the file itself. If you post a real example, we can give more advices.

srinivasmiriyalu · 04-17-2009, 08:22 AM

thanks for your reply..
here is my code and corresponding output..
the problem is after entering any option only it has to go to next questions..but it is displaying continuesly..please take a look

Code:

while read line
do
echo $line
done < questions.txt

output is..

Code:

srinivas@opensolaris:~$ ./tryingscript.sh 
capital of Hungery
a.budapest
b.paris
c.pitsburgh
d.i dont no
your choice:
The longest river in the world
a.ganga
b.nile
c.bramhaputra
d.dont no
your choice :

Niagara Falls was discovered by
a.jhonny
b.Louis Hennepi
c.kempson
d.adrew heko
your choice:
srinivas@opensolaris:~$

colucix · 04-17-2009, 08:37 AM

Code:

while read line
do
echo $line
done < questions.txt

What is the content of questions.txt? You missed the read answer part to get user's response. You just echo the current line.

jisjis · 04-23-2009, 06:37 AM

Quote:

Originally Posted by srinivasmiriyalu

hi friends..
i newbiee to shell scripting..and i want to write a script...when i ran the script then it will ask questions one by one with mentioned options like a,b,c,d...atlast..it needs to display result also....
i dont no how to start and where to start...
pleas help me..
waiting for your valuable replies

Sounds like homework to me ... Did you try Googling???

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