faxstat: command not found

Have You tried accessing the binary with the full path?

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/faxstat - from package: hylafax+-client

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

On Debian possible default full paths are:

/usr/bin/faxstat - from package: hylafax-client

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