hal-disable-polling: 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/hal-disable-polling - from package: hal

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

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