qbs-config-ui: 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/qbs-config-ui - from package: qtcreator

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

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