rzxtool: 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

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/rzxtool - from package: fuse-emulator-utils

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