live-medium-cache: 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:

/bin/live-medium-cache - from package: live-tools

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

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