faxgetty: 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/faxgetty - from package: hylafax+

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

On Debian possible default full paths are:

/usr/sbin/faxgetty - from package: hylafax-server

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

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