tinyeartrainer: 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/tinyeartrainer - from package: tinyeartrainer

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

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