wbemcat: 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/wbemcat - from package: sblim-sfcb

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