criticaleditor.cgi: 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/criticaleditor.cgi - from package: xymon

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

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