In one text file, I have 150 words. I have another text file, which has about 100,000 lines.
How can I check for each of the words belonging to the first file whether it is in the second or not?
I thought about using grep
, but I could not find out how to use it to read each of the words in the original text.
Is there any way to do this using awk
? Or another solution?
I tried with this shell script, but it matches almost every line:
#!/usr/bin/env sh
cat words.txt | while read line; do
if grep -F "$FILENAME" text.txt
then
echo "Se encontró $line"
fi
done
Another way I found is:
fgrep -w -o -f "words.txt" "text.txt"
You can use grep -f
:
grep -Ff "first-file" "second-file"
OR else to match full words:
grep -w -Ff "first-file" "second-file"
UPDATE: As per the comments:
awk 'FNR==NR{a[$1]; next} ($1 in a){delete a[$1]; print $1}' file1 file2