DOMCount: 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/DOMCount - from package: libxerces-c-samples

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

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