Whenever we come across the term cryptography, the first thing and probably the only thing that comes to our mind is private communication through encryption. There is more to cryptography than just encryption. In this article, we will try to learn the basics of cryptography.
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This article explains the basics of Linux export command and shows how to set, view and manipulate Linux env variables using export command.
Environment variables in Linux are used by most of the activities taking place on a Linux system. From executing a standard command like ‘ls’ to installing a new software in your Linux box, each activity either uses or alters the environment variable list.
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Checksum is used for verifying the integrity of the data. Suppose some file is being copied over a network or over a system and due to some event like network connection loss or sudden reboot of machine the data did not get copied completely.
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Even if you are regularly using Google maps, probably few of the tips mentioned below might be new to you.
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As with any OS, file handling is a core concept in Linux. Any system programmer would learn it as one of his/her initial programming assignments. This aspect of programming involves system files.
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Question: I typically use wget to download files. On some systems, wget is not installed and only curl is available. Can you explain me with a simple example on how I can download a remote file using curl? Are there any difference between curl and wget?
Answer: On a high-level, both wget and curl are command line utilities that do the same thing.
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Computer software are developed to either automate some tasks or solve some problems. Either way, a software achieves the goal with the help of the logic that the developer of that software writes. Every logic requires some services like computing the length of a string, opening a file etc. Standard services are catered by some functions or calls that are provided for this purpose only.
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ELF stands for executable and linkable file format.
ELF is used as standard file format for object files on Linux. Prior to this, the a.out file format was being used as a standard but lately ELF took over the charge as a standard.
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My name is Ramesh Natarajan. I will be posting instruction guides, how-to, troubleshooting tips and tricks on Linux, database, hardware, security and web. My focus is to write articles that will either teach you or help you resolve a problem. Read more about