win: 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/win - from package: wily

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

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