flipx: 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/flipx - from package: qfits-tools

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

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