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matching user input to a text file loop?

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# 1  
Old 11-28-2011
matching user input to a text file loop?
Code:
       
until [ $cars1 -eq cars_names.txt ]
do
read -p "Invalid cars. Try againa" cars1
done

Ok i have the above code, im getting users input and if it doesnt match in the file the user has to try again untill its correct

But when i run this it gives me an error saying

Code:
./Cars.bash: line 43: [: ford: integer expression expected

# 2  
Old 11-28-2011

You are using a numeric comparison (-eq) for strings. Use string comparison:
Code:
until [ "$cars1" = cars_names.txt ]
do
  read -ep "Invalid cars. Try again: " cars1
done

This User Gave Thanks to cfajohnson For This Post:
gangsta
# 3  
Old 11-28-2011
Assumption: Your trying to validate user input against a list of valid responses (in cars_names.txt).

Code:
read -p "Car: " cars1
until grep -wiq "$cars1" cars_names.txt && [ -n "$cars1" ]
do
   echo "Invalid car. Try again"
   read -p "Car: " cars1
done

Last edited by Chubler_XL; 11-28-2011 at 07:26 PM.. Reason: Added trap for empty response
This User Gave Thanks to Chubler_XL For This Post:
gangsta
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