wdaemon: 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/wdaemon - from package: wdaemon

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

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