autopvf: 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/autopvf - from package: mgetty-voice

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

On Debian possible default full paths are:

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

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

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