qqwing: 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/qqwing - from package: qqwing

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

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