qrouter: 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/qrouter - from package: qrouter

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

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