luatools: 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 CentOS possible default full paths are:

/usr/bin/luatools - from package: texlive-context

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/luatools - from package: context

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

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