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Satish Kumar has Published 1040 Articles
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
548 Views
Overview We'll learn how to use Linux commands to get the number of occurrences of a specific character in an input file. We're assuming that you know some common Linux commands, including grep, awk, and tr. We'll also suppose that our input file tpoint.txt contains some dummy data − $ ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
20K+ Views
Overview Finding software’s installation directory is a very common operation. One common reason is for updating the PATH environment variable. For example, Java developers are often interested in finding the installation directory of Java. This article shows how to find the location of the JDK on Linux. The method described ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
1K+ Views
Overview To determine whether our file system uses SSD or HDD technology, we need to know which type of storage device is used by our operating system. There are many different aspects of Linux storage. There seem to be just as many tools available for reading and configuring our storage. ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
2K+ Views
Overview In this article, we will discuss about the concept of stale file handles and how to avoid it in your application. We will also see some examples on how to use fcntl() function to check if a file handle is valid or not. The code in this tutorial has ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
15K+ Views
Overview This article explains how to delete an environment variable from the system. An environment variable is a special kind of variable that can be used by all processes running on your machine. The name of this variable is EXPORTED_VARIABLE. You can use it to pass information between different programs ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
2K+ Views
Overview A programmer may want to write three different programs. However, he realizes that some of the functionality needed for each program could be shared among them. Therefore, he decides to create a library containing these shared features. A library is basically a collection of code and data that other ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
178 Views
Overview This article will show you how to protect your files from unauthorized access using the Linux file system permissions, and how to use chmod command to set permissions for a specific user or group of users. Besides the Linux file permission mechanisms that help us keep our files safe ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
104 Views
Overview There are many different ways to compress and collect file on Linux systems. We have several options for doing so: using the command line tools, GUI applications. However, if we share files with Windows or Mac users, the ZIP file remains the most convenient option. We want to maintain ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
8K+ Views
Overview We'll learn how to remove empty directories and empty file on Linux. Empty directories don't take up any disk space, but they're good to keep them tidy. We should clear out old files and folders periodically. All the instructions in this tutorial are for Linux systems. They won't work ... Read More
![Satish Kumar](https://www.tutorialspoint.com/assets/profiles/562858/profile/60_1148539-1669800354.jpeg)
Satish Kumar
852 Views
Overview Here, we’ll see how we can validate the syntactical correctness of a bash script without actually executing it. We’re going to examine some of the Bash and external tools that can be used for that task. Configure Let’s first write a simple script that we’ll be using in almost ... Read More