rzxcheck: 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/rzxcheck - from package: fuse-emulator-utils

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

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