xymonreports.sh: 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/xymonreports.sh - from package: xymon

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

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