dxpc: 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/dxpc - from package: dxpc

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

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