action_notify: 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:

/usr/share/torrus/bin/action_notify - from package: torrus-common

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

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