cmannotifyd: 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/sbin/cmannotifyd - from package: cman

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

On Debian possible default full paths are:

/usr/sbin/cmannotifyd - from package: cman

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

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