gnome-paint: 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/gnome-paint - from package: gnome-paint

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

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