wp2x: 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/wp2x - from package: wp2x

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

Error in other languages:
wp2x: bevel nie gevind nie
wp2x: comandă negăsită
wp2x: comando não encontrado
wp2x: commande introuvable
wp2x: command not found
wp2x: käsku ei ole
wp2x: không tìm thấy lệnh
wp2x: komanda nerasta
wp2x: Kommando nicht gefunden.
wp2x: kommandot finns inte
wp2x: komut yok
wp2x: nie znaleziono polecenia
wp2x: níor aimsíodh an t-ordú
wp2x: no se encontró la orden
wp2x: no s'ha trobat l'ordre
wp2x: opdracht niet gevonden
wp2x: parancs nem található
wp2x: perintah tidak ditemukan
wp2x: príkaz nenájdený
wp2x: příkaz nenalezen
wp2x: команда не найдена
wp2x: командата не е открита
wp2x: 命令找不到
wp2x: コマンドが見つかりません