x2y: 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/x2y - from package: alliance

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

Error in other languages:
x2y: bevel nie gevind nie
x2y: comandă negăsită
x2y: comando não encontrado
x2y: commande introuvable
x2y: command not found
x2y: käsku ei ole
x2y: không tìm thấy lệnh
x2y: komanda nerasta
x2y: Kommando nicht gefunden.
x2y: kommandot finns inte
x2y: komut yok
x2y: nie znaleziono polecenia
x2y: níor aimsíodh an t-ordú
x2y: no se encontró la orden
x2y: no s'ha trobat l'ordre
x2y: opdracht niet gevonden
x2y: parancs nem található
x2y: perintah tidak ditemukan
x2y: príkaz nenájdený
x2y: příkaz nenalezen
x2y: команда не найдена
x2y: командата не е открита
x2y: 命令找不到
x2y: コマンドが見つかりません