mautil: 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/mautil - from package: mono-addins-utils

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