pavumeter: 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/pavumeter - from package: pavumeter

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

On Debian possible default full paths are:

/usr/bin/pavumeter - from package: pavumeter

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

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