mspdebug: 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/mspdebug - from package: mspdebug

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

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