cupstestdsc: 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 CentOS possible default full paths are:

/usr/bin/cupstestdsc - from package: cups

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/cupstestdsc - from package: cups-client

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

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