vzcptcheck: 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 Debian possible default full paths are:

/usr/sbin/vzcptcheck - from package: vzctl

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

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