if [ -f "/etc/vsftpd/ftpusers" ];then echo 'root' >> /etc/vsftpd/ftpusers fi if [ -f "/etc/vsftpd.user_list" ];then echo 'root' >> /etc/vsftpd.user_list fi if [ -f "/etc/vsftpd/user_list" ];then echo 'root' >> /etc/vsftpd/user_list fi if [ -f "/etc/vsftpd.conf" ];then echo 'ftpd_banner=Welcome to blah FTP service' >> /etc/vsftpd.conf echo 'chroot_local_user=NO' >> /etc/vsftpd.conf echo 'chroot_list_enable=YES' >> /etc/vsftpd.conf echo 'chroot_list_file=/etc/vsftpd/chroot_list' >> /etc/vsftpd.conf echo 'anonymous_enable=NO' >> /etc/vsftpd/vsftpd.conf fi if [ -f "/etc/vsftpd/vsftpd.conf" ];then if grep -q "ftpd_banner=Welcome to blah FTP service" /etc/vsftpd/vsftpd.conf then sed -i '/ftpd_banner=Welcome to blah FTP service/s/^#//' /etc/vsftpd/vsftpd.conf else echo 'ftpd_banner=Welcome to blah FTP service' >> /etc/vsftpd/vsftpd.conf fi if grep -q "chroot_local_user" /etc/vsftpd/vsftpd.conf then sed -i '/chroot_local_user=NO/s/^/#/' /etc/vsftpd/vsftpd.conf sed -i '/chroot_local_user=YES/s/^/#/' /etc/vsftpd/vsftpd.conf echo 'chroot_local_user=NO' >> /etc/vsftpd/vsftpd.conf else echo 'chroot_local_user=NO' >> /etc/vsftpd/vsftpd.conf fi

以下是将这些命令转换为Python代码的示例：

import subprocess

ftpusers_file = '/etc/vsftpd/ftpusers'
user_list_file = '/etc/vsftpd/user_list'
vsftpd_conf_file = '/etc/vsftpd.conf'
vsftpd_vsftpd_conf_file = '/etc/vsftpd/vsftpd.conf'

# Update ftpusers file
if subprocess.call('[ -f "/etc/vsftpd/ftpusers" ]', shell=True) == 0:
    subprocess.call("echo 'root' >> /etc/vsftpd/ftpusers", shell=True)

# Update user_list file
if subprocess.call('[ -f "/etc/vsftpd/user_list" ]', shell=True) == 0:
    subprocess.call("echo 'root' >> /etc/vsftpd/user_list", shell=True)

# Update vsftpd.conf file
if subprocess.call('[ -f "/etc/vsftpd.conf" ]', shell=True) == 0:
    subprocess.call("echo 'ftpd_banner=Welcome to blah FTP service' >> /etc/vsftpd.conf", shell=True)
    subprocess.call("echo 'chroot_local_user=NO' >> /etc/vsftpd.conf", shell=True)
    subprocess.call("echo 'chroot_list_enable=YES' >> /etc/vsftpd.conf", shell=True)
    subprocess.call("echo 'chroot_list_file=/etc/vsftpd/chroot_list' >> /etc/vsftpd.conf", shell=True)
    subprocess.call("echo 'anonymous_enable=NO' >> /etc/vsftpd.conf", shell=True)

# Update vsftpd/vsftpd.conf file
if subprocess.call('[ -f "/etc/vsftpd/vsftpd.conf" ]', shell=True) == 0:
    if subprocess.call('grep -q "ftpd_banner=Welcome to blah FTP service" /etc/vsftpd/vsftpd.conf', shell=True) == 0:
        subprocess.call("sed -i '/ftpd_banner=Welcome to blah FTP service/s/^#//' /etc/vsftpd/vsftpd.conf", shell=True)
    else:
        subprocess.call("echo 'ftpd_banner=Welcome to blah FTP service' >> /etc/vsftpd/vsftpd.conf", shell=True)

    if subprocess.call('grep -q "chroot_local_user" /etc/vsftpd/vsftpd.conf', shell=True) == 0:
        subprocess.call("sed -i '/chroot_local_user=NO/s/^/#/' /etc/vsftpd/vsftpd.conf", shell=True)
        subprocess.call("sed -i '/chroot_local_user=YES/s/^/#/' /etc/vsftpd/vsftpd.conf", shell=True)
        subprocess.call("echo 'chroot_local_user=NO' >> /etc/vsftpd/vsftpd.conf", shell=True)
    else:
        subprocess.call("echo 'chroot_local_user=NO' >> /etc/vsftpd/vsftpd.conf", shell=True)

上面的代码首先检查是否存在`/etc/vsftpd/ftpusers`文件，如果存在则向文件中添加一行`root`。接着，检查是否存在`/etc/vsftpd/user_list`文件，如果存在则向文件中添加一行`root`。然后，检查是否存在`/etc/vsftpd.conf`文件，如果存在则向文件中添加几行配置。最后，检查是否存在`/etc/vsftpd/vsftpd.conf`文件，如果存在则更新该文件的相关配置。

请确保你具有足够的权限来执行这些操作，并将需要修改的文件路径正确添加到相应的变量中。运行代码后，命令将被执行。