yeahconsole: 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/yeahconsole - from package: yeahconsole

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

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