health-check: 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/bin/health-check - from package: health-check

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

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