scribble: 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/scribble - from package: racket

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

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