odbxtest: 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/odbxtest - from package: opendbx-utils

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

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