showfond: 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/showfond - from package: fondu

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

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