lout: 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/lout - from package: lout

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

On Debian possible default full paths are:

/usr/bin/lout - from package: lout

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

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