sfood: 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/sfood - from package: snakefood

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