pfHandle: 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/pfHandle - from package: pfHandle

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

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