scanbd: 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/scanbd - from package: scanbd

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

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