ncftpbatch: 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/ncftpbatch - from package: ncftp

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

On Debian possible default full paths are:

/usr/bin/ncftpbatch - from package: ncftp

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

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