dh_cme_upgrade: 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/dh_cme_upgrade - from package: libconfig-model-perl

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

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