flwrap: command not found

Have You tried accessing the binary with the full path?

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/flwrap - from package: flwrap

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