miniprohex: 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 CentOS possible default full paths are:

/usr/bin/miniprohex - from package: minipro

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