xymond: 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/lib/xymon/server/bin/xymond - from package: xymon

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

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