myloader: 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/myloader - from package: mydumper

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

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