scrollz-2.1: 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/scrollz-2.1 - from package: scrollz

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

Error in other languages:
scrollz-2.1: bevel nie gevind nie
scrollz-2.1: comandă negăsită
scrollz-2.1: comando não encontrado
scrollz-2.1: commande introuvable
scrollz-2.1: command not found
scrollz-2.1: käsku ei ole
scrollz-2.1: không tìm thấy lệnh
scrollz-2.1: komanda nerasta
scrollz-2.1: Kommando nicht gefunden.
scrollz-2.1: kommandot finns inte
scrollz-2.1: komut yok
scrollz-2.1: nie znaleziono polecenia
scrollz-2.1: níor aimsíodh an t-ordú
scrollz-2.1: no se encontró la orden
scrollz-2.1: no s'ha trobat l'ordre
scrollz-2.1: opdracht niet gevonden
scrollz-2.1: parancs nem található
scrollz-2.1: perintah tidak ditemukan
scrollz-2.1: príkaz nenájdený
scrollz-2.1: příkaz nenalezen
scrollz-2.1: команда не найдена
scrollz-2.1: командата не е открита
scrollz-2.1: 命令找不到
scrollz-2.1: コマンドが見つかりません