super: 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/super - from package: super

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