How to Combine Ping and Traceroute On Linux Using MTR Command Examples
How to Combine Ping and Traceroute On Linux Using MTR Command Examples MTR stands for My Traceroute. It is a powerful network diagnostic tool which combines the power of both Ping and Traceroute commands. It enables administrator to diagnose and isolate network errors and provide helpful network status reports. In this article, we will explain how to install, use and analyze the report provided by
Introduction to Linux Interrupts and CPU SMP Affinity
Interrupts are signal that are sent across IRQ (Interrupt Request Line) by a hardware or software. Interrupts allow devices like keyboard, serial cards and parallel ports to indicate that it needs CPU attention. Once the CPU receives the Interrupt Request, CPU will temporarily stop execution of running program and invoke a special program called Interrupt Handler or ISR (Interrupt Service Routine)
10 Useful Sar (Sysstat) Examples for UNIX / Linux Performance Monitoring
10 Useful Sar (Sysstat) Examples for UNIX / Linux Performance Monitoring Using sar you can monitor performance of various Linux subsystems (CPU, Memory, I/O..) in real time. Using sar, you can also collect all performance data on an on-going basis, store them, and do historical analysis to identify bottlenecks. Sar is part of the sysstat package. This article explains how to install and configure
10 Linux DIG Command Examples for DNS Lookup
Dig stands for domain information groper. Using dig command you can query DNS name servers for your DNS lookup related tasks. This article explains 10 examples on how to use dig command. 1. Simple dig Command Usage (Understand dig Output) When you pass a domain name to the dig command, by default it displays the A record (the ip-address of the site that is queried) as shown below. In this example,
24 iostat, vmstat and mpstat Examples for Linux Performance Monitoring
24 iostat, vmstat and mpstat Examples for Linux Performance Monitoring This article provides a total of 24 examples on iostat, vmstat, and mpstat commands. iostat reports CPU, disk I/O, and NFS statistics. vmstat reports virtual memory statistics. mpstat reports processors statictics. This article is part of our ongoing Linux performance monitoring series. Please note that iostat and vmstat are pa
Bash Brace Expansion Tutorial: 6 Examples of Expanding Expressions within Braces
Bash Brace Expansion Tutorial: 6 Examples of Expanding Expressions within Braces Bash Shell expansion One of the operation of the shell when it analyzes the input is Shell expansion. Bash provides different types of expansion. In this article let us review an important expansion — “Brace expansion”. This article is part of our on-going Bash Tutorial series. Brace expansion is used to generate arbi
Bash Shell PS1: 10 Examples to Make Your Linux Prompt like Angelina Jolie
Bash Shell PS1: 10 Examples to Make Your Linux Prompt like Angelina Jolie In the previous article, we discussed about Linux environment variables PS[1-4] and PROMPT_COMMAND. If used effectively, PS1 can provide valuable information right on the command prompt. In Tomb Raider, Angelina Jolie has all the gadgets and weapons at her finger tips to solve the mystery in style. While the gadget and style
Turbocharge PuTTY with 12 Powerful Add-Ons – Software for Geeks #3
Turbocharge PuTTY with 12 Powerful Add-Ons – Software for Geeks #3 This article is part of on-going Software For Geeks series. PuTTY is hands-down the best, free, and lightweight SSH client for Windows. I have provided list of 12 powerful PuTTY add-ons with screenshots, that will solve few shortcomings of the original PuTTY. Play around with these add-ons and choose the one that suites your need.
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9 Linux ethtool Examples to Manipulate Ethernet Card (NIC Card)