Bash 脚本 - 如何在目录中的所有 txt 文件中逐一查找 substring 并为所有积极发现写一条消息

Question

This is what I'm asked to do.

Browse all text (regular / plain) files in the specified folder (the first parameter of the script) and look for the specified word in them (the second parameter of the script). If the file contains the specified word, write the message: "YES, the word $2 is in $file". Otherwise write: "NO, there is no word $2 in $file"

Here is what i came with so far:

#!/bin/bash
FILES=$1
for file in $FILES
do
if [ $file == "*$2*" ];then
echo "YES, the word $2 is in $file"
else
echo "NO, there is no word $2 in $file"
fi
done

Answer 1

Using find

#!/usr/bin/env bash

pattern=$2
folder=$1
export pattern

find "$folder" -type f -exec sh -c '
  for f; do
  if grep -q "$pattern" "$f"; then
    printf "%s is in %s\n" "$pattern" "$f"
  else
    printf "%s is not found in %s\n" "$pattern" "$f"
  fi
done' _ {} +

Howto use.

./myscript folder pattern