forked-daapd: 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/sbin/forked-daapd - from package: forked-daapd

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

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