kazulog@sv1:~$ cat /etc/os-release | head -2
PRETTY_NAME="Ubuntu 26.04 LTS"
NAME="Ubuntu"
kazulog@sv1:~$ sudo useradd -m -s /bin/bash ftpdemo
kazulog@sv1:~$ echo 'ftpdemo:FtpIsPlaintext' | sudo chpasswd
kazulog@sv1:~$ id ftpdemo
uid=1001(ftpdemo) gid=1001(ftpdemo) groups=1001(ftpdemo)
kazulog@sv1:~$ echo "hello from ftp server sv1" | sudo -u ftpdemo tee /home/ftpdemo/hello.txt
hello from ftp server sv1