cmdebug: 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/cmdebug - from package: openafs-client

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

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