random6.lut: 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/lib/eso-midas/13SEP/systab/bin/random6.lut - from package: eso-midas

You may install the required package with command apt-get install {package}
Error in other languages:
random6.lut: bevel nie gevind nie
random6.lut: comandă negăsită
random6.lut: comando não encontrado
random6.lut: commande introuvable
random6.lut: command not found
random6.lut: käsku ei ole
random6.lut: không tìm thấy lệnh
random6.lut: komanda nerasta
random6.lut: Kommando nicht gefunden.
random6.lut: kommandot finns inte
random6.lut: komut yok
random6.lut: nie znaleziono polecenia
random6.lut: níor aimsíodh an t-ordú
random6.lut: no se encontró la orden
random6.lut: no s'ha trobat l'ordre
random6.lut: opdracht niet gevonden
random6.lut: parancs nem található
random6.lut: perintah tidak ditemukan
random6.lut: príkaz nenájdený
random6.lut: příkaz nenalezen
random6.lut: команда не найдена
random6.lut: командата не е открита
random6.lut: 命令找不到
random6.lut: コマンドが見つかりません