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

Running Simple Web Server on Python 2 and Python 3

 

Running Simple Web Server on Python 2

python -m SimpleHTTPServer 8000

Running Simple Web Server on Python 3

python -m http.server 8000

Getting Wazuh Agent key from Wazuh Server

 TOKEN=$(curl -u "<username>:<password>" -k -X GET "https://<hostname or ip address>:<port number>/security/user/authenticate?raw=true")

curl -k -X POST -d '{"name":"<agentname>"}' "https://<hostname or ip address>:<port number>/agents?pretty=true" -H "Content-Type:application/json" -H "Authorization: Bearer $TOKEN"

Kibana: NoShardsAvailable Error Solved

 Most likely your Kibana shards are not allocated. 

You can check if some or all of your shards are UNASSIGNED using curl -XGET <host>:9200/_cat/shards?v.

In Dev Tools in Kibana:

GET /_cat/shards?v

I have deleted the UNASSIGNED Status index from Kibana Now the Error is resolved

Log rotate error :error: skipping "log file name or path of the file" because parent directory has insecure permissions (It's world writable or writable by group which is not "root") Set "su" directive in config file to tell logrotate which user/group should be used for rotation.

 Error Description:

error: skipping "<log file name>" because parent directory has insecure permissions (It's world writable or writable by group which is not "root") Set "su" directive in config file to tell logrotate which user/group should be used for rotation.

Answer

su <user> <group>

Selection of Specific Characters from Given Text or Word

 

To select the "XX" characters 

issue the following command

 

echo "C2312GGG999XXL0021"|cut -c 12-13`

bootchartd command -Grub2

 init=/usr/lib/systemd/systemd-bootchart

 

 

check in the /run/log folder for image