lualatex: 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/lualatex - from package: texlive-latex-base

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

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