xdemorse: 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/xdemorse - from package: xdemorse

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

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