pvftormd: 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/pvftormd - from package: mgetty-voice

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

On Debian possible default full paths are:

/usr/bin/pvftormd - from package: mgetty-pvftools

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

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