hatari: command not found

Have You tried accessing the binary with the full path?

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/hatari - from package: hatari

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