bcmxcp_usb: 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:

/sbin/bcmxcp_usb - from package: nut

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