tupi.bin: 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/lib/tupi/bin/tupi.bin - from package: tupi

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

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