dl10k1: 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/sbin/dl10k1 - from package: ld10k1

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

Error in other languages:
dl10k1: bevel nie gevind nie
dl10k1: comandă negăsită
dl10k1: comando não encontrado
dl10k1: commande introuvable
dl10k1: command not found
dl10k1: käsku ei ole
dl10k1: không tìm thấy lệnh
dl10k1: komanda nerasta
dl10k1: Kommando nicht gefunden.
dl10k1: kommandot finns inte
dl10k1: komut yok
dl10k1: nie znaleziono polecenia
dl10k1: níor aimsíodh an t-ordú
dl10k1: no se encontró la orden
dl10k1: no s'ha trobat l'ordre
dl10k1: opdracht niet gevonden
dl10k1: parancs nem található
dl10k1: perintah tidak ditemukan
dl10k1: príkaz nenájdený
dl10k1: příkaz nenalezen
dl10k1: команда не найдена
dl10k1: командата не е открита
dl10k1: 命令找不到
dl10k1: コマンドが見つかりません