loadwatch: 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/loadwatch - from package: loadwatch

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

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