recon: 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/recon - from package: lam-runtime

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

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