Karan Kaw's Blog

Monday, October 18, 2021

#!/bin/bash
sed 's/PasswordAuthentication no/PasswordAuthentication yes/' -i /etc/ssh/sshd_config
systemctl restart sshd
service sshd restart

#TODO: replace bob with your desired username
useradd bob
# TODO: replace password123 with desired password and change bob to your username chosen in useradd
echo "password123" | passwd --stdin bob

------------------------------------------------------------------------------

!/bin/bash

sed 's/PasswordAuthentication no/PasswordAuthentication yes/' -i /etc/ssh/sshd_config

service sshd restart

echo "admin@123" | passwd --stdin root

AWS : SSH Issue - Permission denied

https://stackoverflow.com/questions/36300446/ssh-permission-denied-publickey-gssapi-with-mic

(publickey,gssapi-keyex,gssapi-with-mic).

ssh -i "CCA_Product.pem" ec2-user@10.79.197.206

docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-key-pairs.html#how-to-generate-your-own-key-and-import-it-to-aws

ssh-keygen -m PEM

pem

pub

awsfeed.com/uncategorized/using-ec2-serial-console-to-access-the-grub-menu-and-recover-from-boot-failures

docs.aws.amazon.com/AWSEC2/latest/UserGuide/connect-to-serial-console.html#sc-connection-methods

Push your SSH public key to the instance to start a serial console session

aws ec2-instance-connect send-serial-console-ssh-public-key \

--instance-id i-06a0d8564550494b0 \

--serial-port 0 \

--ssh-public-key file://serialAccess.pub \

--region us-east-1

Connect to the serial console using your private key

ssh -i serialAccess i-06a0d8564550494b0.port0@serial-console.ec2-instance-connect.us-east-1.aws

i-06a0d8564550494b0

Linux : KDE Neon

https://linuxhint.com/install-kde-neon-oracle-virtualbox/

KDE Neon --- Derivative of Ubuntu Linux

Konsole ---- Transparent

LINUX:TMUX

https://youtu.be/l-lcd1MrSLM

tecmint.com/tmux-to-access-multiple-linux-terminals-inside-a-single-console/

https://askubuntu.com/questions/850055/ctrl-b-c-n-w-etc-not-working-in-tmux-console

https://ostechnix.com/tmux-command-examples-to-manage-multiple-terminal-sessions

https://www.networkworld.com/article/3545370/how-to-use-tmux-to-create-a-multi-pane-linux-terminal-window.htm

tmux

ctrl+b and Shift+% ::: Split Vertically

ctrl+b and Shift+" ::: Split Horizontally

Type "exit" from a particular window To kill that window/screen

ctrl+b and d ::: End Session

for example, to create a new terminal hold ctrl+b and release it then press shift+5 (%)

Wednesday, October 6, 2021

Maven : Snippet to copy all dependencies in 1 Folder

<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-dependency-plugin</artifactId>
	<version>3.1.2</version>
	<executions>
		<execution>
			<id>copy-dependancies-to-libs</id>
			<phase>package</phase>
			<goals>
				<goal>copy-dependencies</goal>
			</goals>
			<configuration>
				<outputDirectory>${project.parent.basedir}/dependent-libs</outputDirectory>
				<overWriteReleases>false</overWriteReleases>
				<overWriteSnapshots>false</overWriteSnapshots>
				<overWriteIfNewer>true</overWriteIfNewer>
			</configuration>
		</execution>
	</executions>
</plugin>