dmcs: 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/dmcs - from package: mono-core

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

On Debian possible default full paths are:

/usr/bin/dmcs - from package: mono-mcs

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

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