vmware-guestproxycerttool: 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/vmware-guestproxycerttool - from package: open-vm-tools

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

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