I have 2 files File1, and File2. File1 is list of strings, line1 contain string1, line2 contains strings2 and so on. I would like to pick string1 from File1 and compare it with File 2. Then I pick string2 and compare it with File2. The script does not know how many strings are there in File1 and Fil2. Once all the strings from File1 are compared with File2, the script should give an alarm/pop up window with the list of strings matched in File2.

CodePudding user response：

I don't understand what you mean by popup/window. Also it will be better to use something like grep. Based on the requirement, this is what I came up with.

// abc.txt
abcd
ab
cd
abc

// def.txt
dfd
abc
ab
abcd



file1=()
file2=()

filename1="abc.txt"
filename2="def.txt"
while read -r line; do
    name="$line"
    file1 =("$name")
done < "$filename1"

while read -r line; do
    name="$line"
    file2 =("$name")
done < "$filename2"

for i in "${file2[@]}"
do
   for j in "${file1[@]}"
   do
      if [ "$i" = "$j" ]; then
         echo "Match found $i"
         break
      fi
   done
done