(New-Object Net.WebClient).DownloadFile('ftp://$monIp/file.txt', 'ftp-file.txt')
Ou, en cas de shell non-interractif:
echo open $monIp > ftpcommand.txt
echo USER anonymous >> ftpcommand.txt
echo binary >> ftpcommand.txt
echo GET file.txt >> ftpcommand.txt
echo bye >> ftpcommand.txt
ftp -v -n -s:ftpcommand.txt