CODEWITHSUNDEEP
bashscripting
user3281743
user3281743

Reputation: 295

Reading multiple lines to redirect

currently I have a file named testcase and inside that file has 5 10 15 14 on line one and 10 13 18 22 on line two

I am trying to bash script to take those two inputs line by line to test into a program. I have the while loop comment out but I feel like that is going in the right direction. I was also wondering if is possible to know if I diff two files and they are the same return true or something like that because I dont now if [["$youranswer" == "$correctanswer"]] is working the way I wanted to. I wanted to check if two contents inside the files are the same then do a certain command

#while read -r line
#do
#       args+=$"line"
#done < "$file_input"

# Read contents in the file
contents=$(< "$file_input")
# Display output of the test file
"$test_path" $contents > correctanswer 2>&1
# Display output of your file
"$your_path" $contents > youranswer 2>&1
# diff the solutions
if [ "$correctanswer" == "$youranswer" ]
then
         echo "The two outputs were exactly the same "
 else
         echo "$divider"
         echo "The two outputs were different "
         diff youranswer correctanswer
         echo "Do you wish to see the ouputs side-by-side?"
         select yn in "Yes" "No"; do
                 case $yn in
                         Yes ) echo "LEFT: Your Output   RIGHT: Solution Output"
                               sleep 1
                               vimdiff youranswer correctanswer; break;;
                         No ) exit;;
                 esac
        done
fi

Upvotes: 0

Views: 250

Answers (1)

Ignacio Vazquez-Abrams
Ignacio Vazquez-Abrams

Reputation: 798576

From the diff(1) man page:

Exit status is 0 if inputs are the same, 1 if different, 2 if trouble.

if diff -q file1 file2 &> /dev/null
  echo same
else
  echo different
fi

EDIT:

But if you insist on reading from more than one file at a time... don't.

while read -d '\t' correctanswer youranswer
do
   ...
done < <(paste correctfile yourfile)

Upvotes: 1

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