monograph: 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 CentOS possible default full paths are:

/usr/bin/monograph - from package: mono-devel

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/monograph - from package: mono-utils

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

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