hpireset: 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/hpireset - from package: openhpi32
/usr/bin/hpireset - from package: openhpi

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

On Debian possible default full paths are:

/usr/bin/hpireset - from package: openhpi-clients

You may install the required package with command apt-get install {package}

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