vmware-checkvm: 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-checkvm - from package: open-vm-tools

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

On Debian possible default full paths are:

/usr/bin/vmware-checkvm - from package: open-vm-tools

You may install the required package with command apt-get install {package}

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