pvbatch: 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/pvbatch - from package: paraview

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

On Debian possible default full paths are:

/usr/bin/pvbatch - from package: paraview

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

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