xlog: 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/xlog - from package: xlog

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

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