mangler: 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/bin/mangler - from package: mangler

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

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