via_regs_dump: 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/sbin/via_regs_dump - from package: xorg-x11-drv-openchrome

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

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