dbxtax: 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/dbxtax - from package: emboss

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

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