Linux Kernel Compilation

 Step 1: Install Required Packages

Install additional packages before building a kernel. To do so, run this command:

sudo apt-get install git fakeroot build-essential ncurses-dev xz-utils libssl-dev bc flex libelf-dev bison


Step 2:

Download the Kernel source code from kernel.org, Extract the tar file

Install linux-headers for the base kernel version use following command to know the base kernel version 'uname -a'


Step3 :


Goto the Extracted directory/folder

run following command

make menuconfig


then save the configurationg and click exit


Step 4 :


Run the following command for compiling kernel

make

Step 5 :

Install kernel modules and kernel

make modules_install
make install

 

Step 6:

 

If amd based CPU in the machine

  sudo apt-get install firmware-amd-graphics

JMeter JSON Extractor

 

 

 

json response

{"Key1":"Value1","Key2":"Value2","Key2":"Value2"} 

Name of the variables : jtoken

JSON path Expressions : $.Key1

BOSS AMD 64 Graphics Driver Installation

 

1.Connect the BOSS repository

 

2.Then issue following commands

 

sudo apt-get install firmware-amd-graphics

3.Restart the Machine.

Virtual Manager (virt-manager) Installation BOSS Linux

 

 

Step 1:

 

Open the terminal

 

Step 2:

 

Kindly issue the command on the terminal given below

sudo apt-get install qemu-kvm virt-manager qemu-system libvirt0 bridge-utils

Jupyter installation

 

Step 1:

upgrade the pip3

apt-get install python3-pip

sudo pip3 install --upgrade pip 

Step 2:

Create virtual environment

sudo pip3 install virtualenv

pip3 install virtualenv

mkdir demo
cd demo
virtualenv mynotebookenv
source mynotebookenv/bin/activate 

Step 3:

install the jupyter 

pip install jupyter

jupyter notebook

JMeter Heap Size increase

 

Open the jmeter.bat  file and then add following

HEAP=-Xms1g -Xmx1g

Change to 12GB following like this

HEAP=-Xms12g -Xmx12g

JAVA Path and JAVA_HOME Path Setting in Linux

 

1. Open the Terminal

2. Prepend sudo if logged in as not-privileged user, ie. sudo nano

3. nano /etc/profile

4. Press 'i' to get in insert mode

5. add following :

   export JAVA_HOME="path that you found"
   
   export PATH=$JAVA_HOME/bin:$PATH
   

6. logout and login again, reboot, or use source /etc/profile to apply changes immediately in your current shell