Fpalette: 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/Fpalette - from package: ferret-vis

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

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