faillog: 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/faillog - from package: login

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

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