wbemcm: 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:

/usr/bin/wbemcm - from package: sblim-wbemcli

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

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