Bash help

[ramdisc]

Hi,

Would someone please help me on Bash? Here is a broken script. I need someone to make it work.

#!/bin/bash
echo -n "
  How are you feeling?
    Tire
    Bored
    Hungry

      Enter: " #Type how you feel

read option
  if $option 'Tire'; then
  echo "You should get some rest."

  if $option 'Bored'; then
  echo "Play a game of Frozen Bubble."

  If $option 'Hungry'; then
  echo "Order pizza!"

Would someone please fix it for me? If possible add an error prompt that will say something like "You must have made a typo. Select option again." if I choose something that is not in the options.

Also, how do I make the script stay active until I exit it? Like after the script replies me, it goes back to asking me how I feel?

Thanks in advance for the help.

[thumper]

Re: Bash help

Try http://www.tldp.org/LDP/abs/html/ and look for loops.

[Djem]

Re: Bash help

#!/bin/bash
echo -n "
    How are you feeling?
        Tire
        Bored
        Hungry

            Enter: " #Type how you feel

read option
   if [ $option = "Tire" ]; then
   echo "You should get some rest."; fi

   if [ $option = "Bored" ]; then
   echo "Play a game of Frozen Bubble."; fi

   if [ $option = "Hungry" ]; then
   echo "Order pizza!"; fi

as you can see, adding [] to the area that has to be tested does the trick. You also have to end the 'if' with 'fi'

This script is not a good one, it'll return an error if nothing is typed. It might also be more wrong as I don't know anything about bash programming... yet...

An easier to understand tutorial can be found at http://pegasus.rutgers.edu/~elflord/unix/bash-tute.html

Edit:
If you add: if [ $option != "" ]; then
after 'read option' and 'fi' at the end, then you wont get the error message if nothing is entered

Here is the codes with typo and loop: (as goos as I could get it after working with bash for only 4hours (got some 'basic' programming skills from the earlier days))

----------------------------------------------------------

#!/bin/bash
while [ "$option" != "exit" ]; do   #makes a loop until 'option' = "exit"
echo -n " 
    How are you feeling?
        Tire
        Bored
        Hungry

            Enter: " #Prits the text on the screen

read option   #Asks for what to put in option

if [ "$option" != "exit" ]; then  #This jumps over the last 'read' if 'exit' is typed
if [ "$option" != "" ]; then   #Checks if you have written anything (no_text)

   if [ "$option" = "Tire" ]; then   #Tests if you typed Tired
   echo "You should get some rest."; else   #If you didn't type Tired, It'll test next

   if [ "$option" = "Bored" ]; then
   echo "Play a game of Frozen Bubble."; else

   if [ "$option" = "Hungry" ]; then
   echo "Order pizza!"; else

echo "typo"   #As it didn't stop at any ifs, this line is executed
fi; fi; fi   #All ifs ends here. While the exit and no_text ends later
   else
   echo "You have to type something!"   #if there was no_text typed, the echo is executed
fi   #The no_text if ends here
   read; clear   #this makes a pause until you hit enter, then clears the screen
fi   #ends the exit if. If exit is typed, it jumps here
done   #ends the loop or restarts it
   clear   #Clears the screen before exiting
   echo "Good Bye!"

[Penguin]

Re: Bash help

you can also use a case statement:

if [ "$option" != "exit" -o "$option" != "EXIT" ]; then
   case $option in
       "tired" | "TIRED") echo "something" ;;  # the ;;'s end each condition
       "bored" | "BORED") echo "something" ;;
       "another" | "ANOTHER") echo "antoher" ;;
        *) exit 1 ;; #everything else
    esac
fi

[Djem]

Re: Bash help

I knew that! But mine just looks so much nicer with all the lines and the ifs inside the ifs and all that other nice things that keeps peoples away from steeling my codes.

Or I could just admit that my biggest program ever just makes ANSII pictures from 4 collored bitmaps (and that is infact verry easy, but with my logical programming it almost took an whole page in VB and a whole day of work)

[Penguin]

Re: Bash help

heh. I used to do the same thing. You'll get better at it, takes time.