defid: 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/defid - from package: id-utils

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

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