dragbox: command not found

Have You tried accessing the binary with the full path?

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/dragbox - from package: dragbox

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