xep: 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/xep - from package: pvm-examples

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

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