slapos-watchdog: 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/slapos-watchdog - from package: slapos-node-unofficial

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

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