#!/bin/bash

# 用法：sh fast_diff.sh file1.txt file2.txt

sort "$1" > /tmp/file1_sorted

sort "$2" > /tmp/file2_sorted

echo "只在 $1 中存在的行："

comm -23 /tmp/file1_sorted /tmp/file2_sorted

#echo

#echo "只在 $2 中存在的行："

#comm -13 /tmp/file1_sorted /tmp/file2_sorted

# 清理临时文件

rm /tmp/file1_sorted /tmp/file2_sorted