hxnsxml: 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/hxnsxml - from package: html-xml-utils

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

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