ftp-upload: command not found

Maybe Your $PATH variable doesn't contain the default paths? echo $PATH should give something like:

[root@server ~]# echo $PATH
/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin

If it's empty, You may set the PATH variable with this command

export PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/root/bin"

On Debian possible default full paths are:

/usr/bin/ftp-upload - from package: ftp-upload

You may install the required package with command apt-get install {package}

Error in other languages:
ftp-upload: bevel nie gevind nie
ftp-upload: comandă negăsită
ftp-upload: comando não encontrado
ftp-upload: commande introuvable
ftp-upload: command not found
ftp-upload: käsku ei ole
ftp-upload: không tìm thấy lệnh
ftp-upload: komanda nerasta
ftp-upload: Kommando nicht gefunden.
ftp-upload: kommandot finns inte
ftp-upload: komut yok
ftp-upload: nie znaleziono polecenia
ftp-upload: níor aimsíodh an t-ordú
ftp-upload: no se encontró la orden
ftp-upload: no s'ha trobat l'ordre
ftp-upload: opdracht niet gevonden
ftp-upload: parancs nem található
ftp-upload: perintah tidak ditemukan
ftp-upload: príkaz nenájdený
ftp-upload: příkaz nenalezen
ftp-upload: команда не найдена
ftp-upload: командата не е открита
ftp-upload: 命令找不到
ftp-upload: コマンドが見つかりません