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How to Clear/Flush the DNS Cache on Linux

July 30, 2014April 15, 2020 - by Magesh Maruthamuthu - Leave a Comment

You may need to flush or clear the local DNS cache on your Linux system for various reasons. This could be one of the below reasons. Sometimes you may have …

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How to Block the Access to Certain Websites on Linux

July 18, 2014April 16, 2020 - by Magesh Maruthamuthu - 2 Comments.

Distractions usually occurs when you are connected to the Internet. The reason for this is social media sites such as Facebook.com and Twitter.com. If you spend too much time on …

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How to Setup/Configure MySQL (Master-Slave) Replication on Linux

June 16, 2014April 14, 2020 - by Magesh Maruthamuthu - Leave a Comment

MySQL master-slave replication is a process that automatically copies data from one MySQL database server (master) to one or more MySQL database servers (slaves). MySQL supports various replication methods, but …

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How to Configure/Setup Disk Quotas in Linux

March 10, 2014April 7, 2020 - by Magesh Maruthamuthu - Leave a Comment

Disk space usage can be controlled by implementing disk quota on Linux. This will allow a user to use only the allocated disk space. Also, it keeps your partition under …

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How to Execute PHP, Python and Perl Scripts Using Cron Job

February 11, 2014April 11, 2020 - by Magesh Maruthamuthu - 2 Comments.

As a Linux administrator you may already know about crontab, as this is one of the regular activity for you. You have done a lot of work using crontab for …

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How to Use rsync and scp Commands in Reverse Mode on Linux

December 21, 2013April 2, 2020 - by Magesh Maruthamuthu - Leave a Comment

Typically, you use the rsync command or scp command to copy files from one server to another. But if you want to perform these commands in reverse mode, how do …

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How to Check Open Ports on Linux System

December 10, 2013March 25, 2020 - by Magesh Maruthamuthu - Leave a Comment

It is the responsibility of the administrator to know which TCP and UDP ports are open on your computer. Also, you need to know for what purpose these ports were …

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Linux Basic – Linux and Unix Commands for File and Directory Manipulation

December 7, 2013January 28, 2020 - by Magesh Maruthamuthu - Leave a Comment

Many users have started buying Linux laptops from the past few years, which indicates that the Linux desktop operating system is gaining more users. What prevents users from buying a …

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Top Command – A Best Tool to Monitor Linux System Performance

December 3, 2013December 23, 2019 - by Magesh Maruthamuthu - Leave a Comment

Troubleshooting performance problems on Linux system every day is really a challenging task for a Linux system administrator. High CPU, memory, and disk I/O usage is one of them, which …

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Top 7 Linux File Compression and Archive Tools

September 30, 2013January 2, 2020 - by Magesh Maruthamuthu - Leave a Comment

There are many applications on Linux that compress and decompress files. These tools temporarily shrink unused files or directories and save disk space. It is very useful to save files …