mupmate: 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 CentOS possible default full paths are:

/usr/bin/mupmate - from package: mup

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