LearningWithSharadGTiwari

Kernel When we listen word kernel. First question arises what is kernel? Why it is being used etc. So I will be briefing about all details related to kernel in this blog. What is kernel? Kernel is import component of any Operating System whether it is Windows, Linux , Mac or any other operating system. In this blog , I will be focusing on Linux Kernel only. So lets dive in for Linux Kernel. Linux Kernel is application which interact with hardware.  Linux Distros like Ubuntu,RHEL,CentOs,Fedora etc are build on top of kernel.  Every distro compile kernel as per their requirement and then build OS on top of kernel. Kernel is made of various modules. So here we will talk about the kernel modules.  * List kernel modules To list kernel modules fire below commands.  "lsmod" To know more about specific kernel module .  "modinfo <module_name>"      Module name can be listed using lsmod command. 

 There are 4 main component of any Operating Systems. Components are listed below:-- CPU  RAM Disk Network Linux commands for Network monitoring:- 1. iftop 2. ss  3. sar 4. lsof iftop command sudo apt-get install iftop -y [ To install iftop utility ]            After running `sudo iftop` command , Output will be something as below    ss command  This command is similar to netstat command . Just fire `ss` command and below output will be visible on screen