faxdeluser: 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/faxdeluser - from package: hylafax+

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

On Debian possible default full paths are:

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

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

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