logo: 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/logo - from package: ucblogo

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

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