qtpromaker: 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/qtpromaker - from package: qt-creator

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

On Debian possible default full paths are:

/usr/bin/qtpromaker - from package: qtcreator

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

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