xferfaxstats: 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/xferfaxstats - from package: hylafax+

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

On Debian possible default full paths are:

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

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

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