scriptmgr3: 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/scriptmgr3 - from package: skytools3

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

Error in other languages:
scriptmgr3: bevel nie gevind nie
scriptmgr3: comandă negăsită
scriptmgr3: comando não encontrado
scriptmgr3: commande introuvable
scriptmgr3: command not found
scriptmgr3: käsku ei ole
scriptmgr3: không tìm thấy lệnh
scriptmgr3: komanda nerasta
scriptmgr3: Kommando nicht gefunden.
scriptmgr3: kommandot finns inte
scriptmgr3: komut yok
scriptmgr3: nie znaleziono polecenia
scriptmgr3: níor aimsíodh an t-ordú
scriptmgr3: no se encontró la orden
scriptmgr3: no s'ha trobat l'ordre
scriptmgr3: opdracht niet gevonden
scriptmgr3: parancs nem található
scriptmgr3: perintah tidak ditemukan
scriptmgr3: príkaz nenájdený
scriptmgr3: příkaz nenalezen
scriptmgr3: команда не найдена
scriptmgr3: командата не е открита
scriptmgr3: 命令找不到
scriptmgr3: コマンドが見つかりません