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Using OR (-o) in while loop... HELP

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Top Forums Shell Programming and Scripting Using OR (-o) in while loop... HELP
# 1  
Old 10-16-2012
Error Using OR (-o) in while loop... HELP
Need to ask user question and get user to input YES or NO otherwise loop. Below is my code but its not working. Please help, I'm using bash shell.

Code:
echo "How about some YES or NO questions --- Are you ready ?"
echo "1. Do you own an iPhone ?"
read ANS1
while [  ["$ANS1" != "YES"] -o [$ANS1 != "NO"] ]
do
  echo "Please answer with YES or NO"
  read ANS1
done

Last edited by Scott; 10-16-2012 at 05:39 PM.. Reason: Code tags
# 2  
Old 10-16-2012
Change
Code:
while [ ["$ANS1" != "YES"] -o [$ANS1 != "NO"] ]

to
Code:
while [[ ! $ANS1 == @(YES|NO) ]]

# 3  
Old 10-16-2012
Code:
echo "How about some YES or NO questions --- Are you ready ?"
echo "1. Do you own an iPhone ?"
read ANS1

while(true)
do
        if [ "$ANS1" = "YES" ] || [ "$ANS1" = "NO" ]
        then
                print "$ANS1"
                break;
        else
                echo "Please answer with YES or NO"
                read ANS1
fi

done

# 4  
Old 10-16-2012
Getting error: Syntax error: "(" unexpected (expecting "do")
# 5  
Old 10-16-2012
Or:
Code:
echo "How about some YES or NO questions --- Are you ready ?"
echo "1. Do you own an iPhone ?"
read ANS1
while [ "$ANS1" != "YES" ] && [ "$ANS1" != "NO" ]
do
   echo "Please answer with YES or NO"
   read ANS1
done

This User Gave Thanks to rdrtx1 For This Post:
ashboi_bash
# 6  
Old 10-16-2012
Quote:
Originally Posted by bipinajith
Code:
echo "How about some YES or NO questions --- Are you ready ?"
echo "1. Do you own an iPhone ?"
read ANS1

while(true)
do
        if [ "$ANS1" = "YES" ] || [ "$ANS1" = "NO" ]
        then
                print "$ANS1"
                break;
        else
                echo "Please answer with YES or NO"
                read ANS1
fi

done


Getting this error:

Warning: unknown mime-type for "NO" -- using "application/octet-stream"
Error: no such file "NO"

---------- Post updated at 12:53 AM ---------- Previous update was at 12:48 AM ----------

Quote:
Originally Posted by rdrtx1
Or:
Code:
echo "How about some YES or NO questions --- Are you ready ?"
echo "1. Do you own an iPhone ?"
read ANS1
while [ "$ANS1" != "YES" ] && [ "$ANS1" != "NO" ]
do
   echo "Please answer with YES or NO"
   read ANS1
done

Thanks works good. Kindly explain to me the condition. I thought for bash its meant to use -a instead of && ???
# 7  
Old 10-16-2012
The condition is loop while ANS1 is not YES and ANS1 is not NO (or not YES or NO). There are many ways to test for the OR as shown on the other posts.
This User Gave Thanks to rdrtx1 For This Post:
ashboi_bash
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