fileschanged: 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/fileschanged - from package: fileschanged

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

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