wily: 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/wily - from package: wily

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

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