hald: command not found

Have You tried accessing the binary with the full path?

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/hald - from package: hal

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