xspp: 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/xspp - from package: libextutils-xspp-perl

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