atari-hd-image: 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/atari-hd-image - from package: hatari

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

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