monolinker: 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/monolinker - from package: mono-devel

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

On Debian possible default full paths are:

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

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

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