massxpert: 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/massxpert - from package: massxpert

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

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