mlogc: 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/mlogc - from package: mlogc

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

On Debian possible default full paths are:

/usr/bin/mlogc - from package: libapache2-mod-security2

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

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