The more utility is suitable for page-by-page viewing of files in the Linux terminal. It owes its name to more, which appears at the bottom of each page. The more linux command is one of the most primitive commands for working with text. Its closest relative, the less command, has a much larger set of options and additional features. Let's take a look at its syntax and examples of its use.
Terminal commands are the main advantage of the Linux operating system. The problem is that the user is not always able to figure out all the commands on his own. This is useful, because with the help of commands you can do much more, and importantly, much more conveniently, compared to the graphical interface. The developers have created a special help system where you can find information about any command. Most of the commands contain help pages in their packages, which are added to the common database during installation. In this article we will talk about what man is and how to use this utility.
Surely you have faced a situation when the Internet on your computer suddenly breaks, such behavior can be observed when using ADSL modems, long distance Wifi, GSM and other similar unreliable technologies. You can quickly find out if your computer has internet by using the ping utility.
The less command allows you to rewind the text not only forward but also backward, search in both directions, go straight to the end or the beginning of the file. The peculiarity of less is that the command does not read the text completely, but loads it in small fragments.
In some cases you may need to see how much space files occupy in a certain folder and find the largest files to delete. There are several tools to solve these tasks, but the simplest of them is the du utility. It allows you to display the size of all files in a certain folder in bytes or in a more convenient format. Let's see what the du Linux command is and how to use it to solve your work tasks.
Each file and folder in the file system has a so-called Inode structure where the metadata of this object is stored. It stores the owner, owner group, time of modification, creation and access to the file, as well as other information. It can be seen not only with the help of file system debugging tools. Certain information is shown by the ls utility, but if you need more, you can use the stat command. Below we will tell you how to use this command in Linux.
Wireshark is a popular program that allows you to analyze network traffic. The program allows the user to view the contents of network packets at different levels of network operation. In addition to directly analyzing traffic, the program has the ability to decrypt encrypted wireless network packets. Unlike the console utility tcpdump, Wireshark has a very convenient graphical interface.
FFmpeg is a tool for converting files in most known video formats. The FFmpeg program has no graphical interface, but it allows you to perform tasks that other video converters are simply powerless to do. In this article, let's see how to install FFmpeg in Ubuntu 20.04 from the official repositories, as well as using the snap package. And then let's talk about how to use it to convert a small video from one format to another.
This is the name of a queue server that can handle messages using AMQP (Advanced Message Queuing Protocol). Several other protocols are also used with the help of plugins. Most often used as a broker of text messages, it receives messages from programs that generate them and delivers them to programs that are ready to receive them. The server itself is written in Erlang.