qmc: 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/qmc - from package: qmc

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

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