ludevit: 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/ludevit - from package: ludevit

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

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