Author: Vahid

My chief interest is software engineering, mainly dealing with Linux and Java projects, but also interested in teaching what I've learned, have published a couple of CBTs about programming in Persian (java/Android) and here I'll share my thoughts and experiences in English as well.

After configuring Ubuntu to use LDAP ssh login become too slow

This is a common symptom of mis behaviour of systemd-logind. I couldn’t still find-out what is really happening underneath of this service but if you experience such issues you can try to restart the service using following command sudo service systemd-logind restart and make sure to run this code on the console not just by… Continue reading After configuring Ubuntu to use LDAP ssh login become too slow

How to install maven on Ubuntu manually with any specific version

For installing Maven on Ubuntu you have two ways  the easy way and the manual method. The easy way is just execute following command : sudo apt-get install maven Or if you use Ubuntu 16+ you can use following command too : sudo apt install maven Just remember you need to have root privileges. The… Continue reading How to install maven on Ubuntu manually with any specific version

How to traceroute a particular IP and Port?

There are sometimes that you want to trace an IP/Host based on a particular port to check if the port is open or not here is how you can do that : traceroute -T -p 25 yoursite.com Breakdown : -T indicates to use TCP instead of UDP -p checks specific port