Look word inside file in directory

Question

I am new at Bash. I have a directory tags with a lot of .txt files with similar names like this

[coral/home/tags]$ ls:
file1.txt file2.txt file3.txt file4.txt

Each .txt file contains information like this:

line1 b1
line2 b2
line3 b3
line4 b4

I want to look in every text file and find those with the word b3. If the file contains that word I want the script to write the entire line and the text file that contains such word.

This is my failed attempt:

#!/usr/bin/env                                                           
PATH=path/to/files
for x in $PATH:
do
  echo $x
done

Answer 1

if you don't mind using grep:

in tags directory: grep -Hrn 'b3' .

• -H prints filename (implied when multiple files being searched)
• -r searches recursively
• -n prints line number
• . wildcard

Potentially interesting option: grep -C 3 'b3' path/to/files you can adjust the -Context number of lines returned before and after a match (here, it's 3).