biosdevname: 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 CentOS possible default full paths are:

/sbin/biosdevname - from package: biosdevname

You may install the required package with command yum install {package}

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