xml2brl: 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/xml2brl - from package: liblouisxml-bin

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

Error in other languages:
xml2brl: bevel nie gevind nie
xml2brl: comandă negăsită
xml2brl: comando não encontrado
xml2brl: commande introuvable
xml2brl: command not found
xml2brl: käsku ei ole
xml2brl: không tìm thấy lệnh
xml2brl: komanda nerasta
xml2brl: Kommando nicht gefunden.
xml2brl: kommandot finns inte
xml2brl: komut yok
xml2brl: nie znaleziono polecenia
xml2brl: níor aimsíodh an t-ordú
xml2brl: no se encontró la orden
xml2brl: no s'ha trobat l'ordre
xml2brl: opdracht niet gevonden
xml2brl: parancs nem található
xml2brl: perintah tidak ditemukan
xml2brl: príkaz nenájdený
xml2brl: příkaz nenalezen
xml2brl: команда не найдена
xml2brl: командата не е открита
xml2brl: 命令找不到
xml2brl: コマンドが見つかりません