ufond: 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/ufond - from package: fondu

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

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