maude: 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/maude - from package: maude

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

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