yrmcdsd: 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/sbin/yrmcdsd - from package: yrmcds

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

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