cftp: 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 CentOS possible default full paths are:

/usr/bin/cftp - from package: python-twisted-conch

You may install the required package with command yum install {package}

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