ebncontrol: 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/sbin/ebncontrol - from package: ebnetd

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

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