chuck.oss: 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/chuck.oss - from package: chuck

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

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