mori.x: 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/mori.x - from package: palp

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