Debian 9: Install curlftpfs for FTP client

Install curlftpfs package.

$ sudo apt install -y curlftpfs

Mount FTP with curlftpfs to mnt directory.

$ FTP_SERVER=$(hostname)-ftp-server.hiroom2.com
$ FTP_USERNAME=guest
$ FTP_PASSWORD=guest
$ mkdir mnt
$ curlftpfs -o user=${FTP_USERNAME} "${FTP_SERVER}" mnt
Enter host password for user '${FTP_USERNME}':

You can set password with user=<username>:<password>.

$ curlftpfs -o user=${FTP_USERNAME}:${FTP_PASSWORD} "${FTP_SERVER}" mnt

The password in ~/.netrc will be used with user=<username>:.

$ cat <<EOF > ~/.netrc
machine ${FTP_SERVER}
login ${FTP_USERNAME}
password ${FTP_PASSWORD}
EOF
$ chmod 600 ~/.netrc
$ curlftpfs -o user=${FTP_USERNAME}: "${FTP_SERVER}" mnt

If not specifying user, you will connect as anonymous user.

$ curlftpfs "${FTP_SERVER}" mnt

The allow_other allows access from other user. The allow_root allows access from root user. If not specifying allow_other and allow_root, mount point can be accessed by only user which runs mount.

$ curlftpfs -o user=${FTP_USERNAME},allow_other "${FTP_SERVER}" mnt

Add mount entry to /etc/fstab. For avoiding mounting FTP before network initialization, you need to add _netdev option. For making x-systemd.automount to mount FTP, you need to add x-systemd.automount to option.

$ OPT=_netdev,x-systemd.automount,allow_other
$ echo "curlftpfs#${FTP_USERNAME}:${FTP_PASSWORD}@${FTP_SERVER} /mnt fuse ${OPT} 0 0" | \
    sudo tee -a /etc/fstab

Creating .netrc in /root can omit password.

$ cat <<EOF | sudo tee /root/.netrc
machine ${FTP_SERVER}
login ${FTP_USERNAME}
password ${FTP_PASSWORD}
EOF
$ sudo chmod 600 /root/.netrc
$ echo "curlftpfs#${FTP_USERNAME}:@${FTP_SERVER} /mnt fuse ${OPT} 0 0" | \
    sudo tee -a /etc/fstab