freewrl_msg: 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/freewrl_msg - from package: freewrl

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

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