skyeye: 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/skyeye - from package: skyeye

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

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