System
Top MCSE Interview Questions for System Admins
by M H N
A collection of top MCSE interview questions and answers for System Admins. MCSE (Microsoft Certified Solutions Expert) is a senior level certification from Microsoft. MCSA...
Solaris OK Prompt Commands
by M H N
A list of Solaris OK prompt commands is handy to get the most out of OK prompt during initial install of Solaris Systems or troubleshooting...
Top 15 MCSE Interview Questions & Answers for System Administrators
by M H N
We have compiled a comprehensive list of frequently asked MCSE Interview Questions with Answers. You must know that the MCSE is a continuously varying field...
Useful Exim Commands with Examples
by M H N
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix/Linux systems connected to the Internet. It is freely...
The difference between fork(), vfork(), exec() and clone()
by M H N
Fork: The fork call basically makes a duplicate of the current process, identical in almost every way (not everything is copied over, for example, resource...
ELK Stack – Upgrade from 2.x to 5.x
by M H N
Elasticsearch Snapshot and Restore https://www.elastic.co/guide/en/elasticsearch/reference/current/modules-snapshots.html Elasticsearch Migration Helper Plugin cd /usr/share/elasticsearch/ ./bin/plugin install https://github.com/elastic/elasticsearch-migration/releases/download/v2.0.4/elasticsearch-migration-2.0.4.zip you may get updated command from here -> Elasticsearch Migration Plugin...
netstat – Find number of active connections in Linux using netstat
by M H N
The “netstat” command is quite useful for checking connections to your machine. If we wanted to see ALL of the connections (which i really recommend...
Web Server Performance Tuning
by M H N
First off, Apache, nginx, or LightSpeed aside – if you’re running a server with 1000-2000 requests/second it’s time to start thinking about dual servers and...