moprc: 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/sbin/moprc - from package: latd

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