arbtt-import: 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/arbtt-import - from package: arbtt

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

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