mallex: 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/mallex - from package: malaga

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

On Debian possible default full paths are:

/usr/bin/mallex - from package: malaga-bin

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

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