使用python cgi运行linux命令时，HTML页面在加载时卡住

import subprocess
import os

print("Content-Type: text/html")
print()

# 异步执行命令
cmd = "your_long_running_command"
process = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

# 输出提示信息
print("Command is running in the background. You can check the status later.")

# 可以选择将进程ID保存到文件或数据库，以便后续检查状态
with open("process_id.txt", "w") as f:
    f.write(str(process.pid))

import subprocess
import signal
import time

def run_command_with_timeout(cmd, timeout):
    def handler(signum, frame):
        raise TimeoutError("Command timed out")

    signal.signal(signal.SIGALRM, handler)
    signal.alarm(timeout)

    try:
        result = subprocess.run(cmd, shell=True, check=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        return result.stdout.decode()
    except TimeoutError as e:
        return str(e)
    finally:
        signal.alarm(0)  # 取消闹钟

print("Content-Type: text/html")
print()

cmd = "your_long_running_command"
timeout = 10  # 设置超时时间为10秒

try:
    output = run_command_with_timeout(cmd, timeout)
    print(output)
except subprocess.CalledProcessError as e:
    print(f"Command failed with error: {e.stderr.decode()}")

from flask import Flask, render_template
import subprocess

app = Flask(__name__)

@app.route('/')
def index():
    return render_template('index.html')

@app.route('/run_command')
def run_command():
    cmd = "your_long_running_command"
    process = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
    return f"Command is running in the background with PID {process.pid}"

if __name__ == '__main__':
    app.run(host='0.0.0.0', port=8080)