francine: 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:

/bin/francine - from package: francine

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

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