jigdo-lite: 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/jigdo-lite - from package: jigdo-file

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

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