notify.awk: 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 Debian possible default full paths are:

/var/spool/hylafax/bin/notify.awk - from package: hylafax-server

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

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