hxmultitoc: command not found

Have You tried accessing the binary with the full path?

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/hxmultitoc - from package: html-xml-utils

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