swfc: 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/swfc - from package: swftools

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