genpmda: 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/genpmda - from package: pcp

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

On Debian possible default full paths are:

/usr/bin/genpmda - from package: pcp

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

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