penlogd: 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 CentOS possible default full paths are:

/usr/bin/penlogd - from package: pen

You may install the required package with command yum install {package}

On Debian possible default full paths are:

/usr/bin/penlogd - from package: pen

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

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