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Recover Deleted Files On Linux (Beginners Tutorial)

Have you ever deleted any important files by mistake? Who doesn’t! Okay, but can I recover them? In this post, you will learn how to recover deleted files on Linux using various programs on different file systems. You will see how to recover deleted files from SD cards, HDDs, and deleted partitions on different Linux file systems such as EXT3, ...

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TCP: out of memory — consider tuning tcp_mem

Recently we experienced an interesting production problem. This application was running on multiple AWS EC2 instances behind Elastic Load Balancer. The application was running on GNU/Linux OS, Java 8, Tomcat 8 application server. All of sudden one of the application instances became unresponsive. All other application instances were handling the traffic properly. Whenever the HTTP request was sent to this ...

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15 Linux Ping Command Examples For Network Diagnostics

Thanks to Linux, we have access to many tools that facilitate networking administration & diagnostics. In this sense, the Linux ping command is one of the most useful tools for sysadmins and network administrators. Its basic function is to determine if one host of the network is reachable or not. However, in this post, we will address other more advanced capabilities ...

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MySQL On Linux (Beginners Tutorial)

In this post, we will cover many aspects of MySQL on Linux. First of all, how to install it, how to perform basic CRUD operations, how to import & export data, play with the MySQL engine itself such as setting the root user password and much more. MySQL is one of the most popular relational databases engines in the world. ...

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OpenVINO Ubuntu Xenial, Virtualbox and Vagrant Install, Intel NCS2 (Neural Compute Stick 2)

#OpenVINO Ubuntu Xenial, Virtualbox and Vagrant Install, Intel NCS2 (Neural Compute Stick 2) Prerequsites Download Latest VirtualBox from [https://www.virtualbox.org/wiki/Downloads] https://www.virtualbox.org/wiki/Downloads Make sure to download extension pack Oracle VM VirtualBox Extension Pack Download and Install Vagrant from[https://www.vagrantup.com/downloads.html]https://www.vagrantup.com/downloads.html First step is to setup VM. 1 vagrant up Vagrant is configured to apply all usb filters required to access Neural Compute Stick 1 ...

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Command-line SQL Client for IBM i 7.x (AS/400)

In the category of “niche blogposts”, this is probably the “nichest”. But it might be useful, so I’ll share it. Recently I had to interface an IBM i system (think “mainframe”, though not exactly) from a command-line-only Linux environment. The interesting part is that you can access the IBM i files through SQL syntax, as they are tabular in nature. ...

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