lybniz: 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/lybniz - from package: lybniz

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

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