pmdumplog: 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/pmdumplog - from package: pcp

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

On Debian possible default full paths are:

/usr/bin/pmdumplog - from package: pcp

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

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