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Linux Articles
Page 75 of 134
4 Ways to Watch or Monitor Log Files in Real Time
Log files are a vital component of any computer system − they contain detailed records of activities and events that occur on a system. These files help you understand what happened in the past, but in certain scenarios, you might want to monitor them in real-time to stay ahead of issues and troubleshoot problems before they escalate. This article explores 4 primary ways to watch or monitor log files in real-time. Tail Command The tail command is a popular Unix/Linux utility used to display the last few lines of a file. It's particularly useful for monitoring log files ...
Read MoreArpwatch Tool to Monitor Ethernet Activity in Linux
As a system administrator, it is crucial to keep an eye on network activity in order to ensure security and detect any anomalies. In Linux, one useful tool for monitoring Ethernet activity is Arpwatch. In this article, we will explore what Arpwatch is, how it works, and how to use it effectively. What is Arpwatch? Arpwatch is a network monitoring tool that tracks Ethernet/IP address pairings and alerts administrators when changes occur. It monitors ARP (Address Resolution Protocol) activity, which maps IP addresses to MAC addresses on local networks. Arpwatch is particularly useful for detecting potential network ...
Read MoreAtom – A Hackable Text and Source Code Editor for Linux
Atom is an open-source text and source code editor that was first released in 2014. It is created by GitHub and built on the Electron framework, which makes it easily extensible and customizable. Atom is designed to be a hackable editor, which means that it can be modified and configured to suit individual needs. In this article, we will explore Atom's features and capabilities, as well as how to use it for text and source code editing on Linux systems. What is Atom? Atom is a text and source code editor that was developed by GitHub, the ...
Read MoreAuto Logout in Linux Shell Using TMOUT Shell Variable
When using a Linux shell, it's essential to ensure that users are logged out when they are not actively using the system to maintain security and efficiency. This can be achieved by setting an automatic logout timer using the TMOUT shell variable. In this article, we will explore how to set up auto logout in Linux shell using TMOUT, its benefits, and how to modify the settings. What is TMOUT Shell Variable? TMOUT is an environment variable in Linux shell that defines the number of seconds a shell session can be idle before it is automatically logged out. ...
Read MoreAutojump – An Advanced ‘cd’ Command to Quickly Navigate Linux Filesystem
As a Linux user, you probably find yourself navigating through your file system on a regular basis. Whether you're moving between directories to run commands or searching for specific files, you may have found that using the cd command can become cumbersome and time-consuming, especially if you have to navigate through multiple directories. Fortunately, there's a solution: Autojump. What is Autojump? Autojump is a smart command-line tool that allows you to quickly and easily navigate through your file system by learning your most frequently used directories. It's an intelligent alternative to the standard cd command, and it's especially ...
Read MoreAutomatic Performance Tuning of CentOS/RHEL Servers
Automatic performance tuning for CentOS/RHEL servers involves using intelligent tools and daemons that continuously monitor system resources and adjust configuration parameters dynamically. This approach eliminates manual intervention while ensuring optimal performance across CPU, memory, disk I/O, and network subsystems based on workload patterns. What is Performance Tuning? Performance tuning is the process of optimizing a system's performance by adjusting various parameters and settings. In the context of server performance tuning, it involves tweaking settings such as CPU utilization, memory usage, disk I/O, network throughput, and application-specific configurations to achieve maximum efficiency. Why Automatic Performance Tuning? Manual ...
Read MoreBandwidth – A Network Bandwidth Utilization Tool for Linux
Bandwidth is a crucial factor when it comes to network utilization. It determines the amount of data that can be transmitted through a network connection in a given time frame. Linux provides a range of network tools to monitor and manage bandwidth utilization. Among these tools, Bandwidth is a reliable and versatile command-line utility that helps users monitor and analyze network bandwidth usage on Linux systems. In this article, we will explore the Bandwidth tool, its features, installation process, and usage. We will also discuss practical examples of using Bandwidth to manage and optimize network bandwidth utilization. What ...
Read MoreBash break How to Exit From a Loop
If you are a Linux or Unix user, then you might be familiar with Bash shell. Bash is a popular command-line interpreter that is widely used in Linux, macOS, and other Unix-like operating systems. It is a powerful tool for running scripts, automating tasks, and working with command line. One of the most common use cases for Bash is working with loops, which allow you to repeat a set of instructions multiple times. However, sometimes you might need to break out of a loop before it has finished executing. In this article, we will explore how to exit from a ...
Read MoreBash Continue How to Resume a Loop
Bash is a popular command-line interface shell used extensively in Linux and Unix operating systems. One of its most useful features is the ability to execute loops, which automate repetitive tasks. Sometimes you may need to skip certain iterations within a loop or control its flow. This is where the Bash continue statement becomes essential. What is a Bash Loop? A loop is a programming construct that executes a block of code repeatedly. Bash supports several types of loops including for loops (which iterate over a set of values) and while loops (which execute as long as a ...
Read MoreBash declare Statement Syntax and Examples
The declare statement is a built-in Bash command that allows you to set attributes for variables and control their behavior. When you declare a variable using declare, you can specify how Bash should treat that variable − whether it's an array, integer, read-only, or has other special properties. Syntax of Declare Statement The basic syntax of the declare statement is straightforward − declare [options] variable=value Where declare is the keyword, [options] are flags that set specific attributes, and variable=value assigns a value to the variable. Common Declare Options Option ...
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