lo10k1: 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/lo10k1 - from package: ld10k1

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

Error in other languages:
lo10k1: bevel nie gevind nie
lo10k1: comandă negăsită
lo10k1: comando não encontrado
lo10k1: commande introuvable
lo10k1: command not found
lo10k1: käsku ei ole
lo10k1: không tìm thấy lệnh
lo10k1: komanda nerasta
lo10k1: Kommando nicht gefunden.
lo10k1: kommandot finns inte
lo10k1: komut yok
lo10k1: nie znaleziono polecenia
lo10k1: níor aimsíodh an t-ordú
lo10k1: no se encontró la orden
lo10k1: no s'ha trobat l'ordre
lo10k1: opdracht niet gevonden
lo10k1: parancs nem található
lo10k1: perintah tidak ditemukan
lo10k1: príkaz nenájdený
lo10k1: příkaz nenalezen
lo10k1: команда не найдена
lo10k1: командата не е открита
lo10k1: 命令找不到
lo10k1: コマンドが見つかりません