cupsdconf: 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/cupsdconf - from package: kdelibs3

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

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