spe: 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/spe - from package: spe

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

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