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

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

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