identd: 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/identd - from package: pidentd

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

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