xfe: command not found

Have You tried accessing the binary with the full path?

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/xfe - from package: xfe

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