screenie-qt: 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/screenie-qt - from package: screenie-qt

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

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