当子进程重复派生并kill -9时，如何终止bash脚本上的背景子进程

#!/bin/bash

# 定义一个函数来终止子进程
function terminate_child_process {
    echo "Terminating child process..."
    # 终止子进程的命令
    kill <child_process_pid>
}

# 设置trap函数，当接收到SIGTERM信号时调用terminate_child_process函数
trap terminate_child_process SIGTERM

# 启动子进程
<command_to_start_child_process> &

# 等待子进程结束
wait

#!/bin/bash

# 查找子进程的进程ID
child_process_pid=$(pgrep -f "<child_process_name>")

# 终止子进程
if [ -n "$child_process_pid" ]; then
    echo "Terminating child process..."
    # 终止子进程的命令
    pkill -TERM -P $child_process_pid
fi

#!/bin/bash

# 查找子进程的进程ID
child_process_pid=$(ps -ef | grep "<child_process_name>" | grep -v grep | awk '{print $2}')

# 终止子进程
if [ -n "$child_process_pid" ]; then
    echo "Terminating child process..."
    # 终止子进程的命令
    kill -TERM $child_process_pid
fi