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    Useful Exim Commands with Examples

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    Top 25+ Windows System Administration Interview Questions

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    MCSE Top Interview Q&A

    Top 25+ MCSE Interview Questions for System Admins

    Windows M H N - 0
    A collection of 25+ top MCSE interview questions with answers for System Admins. MCSE (Microsoft Certified Solutions Expert) is a senior level certification from Microsoft....

    Solaris OK prompt commands

    Solaris M H N - 0
    What is OK Prompt? Most of the time, when you start the server with Solaris OS installed, it boots at run level 2 or run...

    The difference between fork(), vfork(), exec() and clone()

    Operating Systems M H N - 0
    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

    ELK Stack M H N - 0
    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 Install You may download plugin from...

    netstat – Find number of active connections in Linux using netstat

    Operating Systems M H N - 0
    The "netstat" command is quite useful for checking connections to your machine. If we wanted to see ALL of the connections (which i really...

    Web Server Performance Tuning

    Linux M H N - 0
    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...

    top command on multi core processor

    Linux M H N - 0
    top command shows CPU usage as a percentage of a single CPU by default. That's why you can have percentages that are >100. On a...

    Windows – How to Kill hung service – Windows Service Which is Stuck

    Windows M H N - 0
    Sometimes as an administrator you may need to kill a service which is stuck in a 'starting' or 'stopping' state, in order to avoid...
    mysql update

    Reasons to Stick with MySQL

    Articles M H N - 0
    MySQL’s founder is encouraging people to steer away from his creation. Here’s why he’s wrong. Schism between the worlds of open source and proprietary software...
    mysql update

    MySQL Update – MySQL Upgrade

    MySQL M H N - 0
    MySQL update process some times create issues like, MySQL server doesn't start. when you perform MySQL update using yum update or yum update mysql or yum update mysql-server before restarting or...
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