Murugan Chandrasekar MuruganChandrasekar

## Install Python 3.7.0 on CentOS 7
Install Python 3.7.0 on CentOS/RHEL 7

1.Requirements:

yum install gcc openssl-devel bzip2-devel

2.Download Python 3.7:

cd /usr/src
wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz

## smb.conf
[global]

read raw = Yes
write raw = Yes
socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=131072 SO_SNDBUF=131072
min receivefile size = 16384
use sendfile = true
aio read size = 16384
aio write size = 16384
protocol = SMB3

## shared_folder_centos_virtualbox.txt
# The VirtualBox documentation[1] for how to install guest additions
# for Linux on a virtual host is somewhat messy. So here is what
# I did to make it work.

# Install the packages required
yum update
yum install gcc kernel-devel make

reboot

## kvm-copy-paste.md

      
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                MuruganChandrasekar
                / kvm-copy-paste.md
            
            
              Created
              February 6, 2023 17:26
                — forked from hakonhagland/kvm-copy-paste.md
            
              
                How to make copy&paste work between Ubuntu host and Windows 10 guest for a KVM virtual machine?
              
          
    From Ubuntu: Install kvm

sudo apt-get install qemu-kvm libvirt-daemon-system libvirt-clients bridge-utils virt-manager
sudo systemctl enable libvirtd.service

Download Windows 10 ISO

https://www.microsoft.com/nb-no/software-download/windows10ISO
Start virtual manager


## squid.conf

#	WELCOME TO SQUID 2.7.STABLE9
#	----------------------------
#
#	This is the default Squid configuration file. You may wish
#	to look at the Squid home page (http://www.squid-cache.org/)
#	for the FAQ and other documentation.
#
#	The default Squid config file shows what the defaults for
#	various options happen to be.  If you don't need to change the

## self-signed-certificate-with-custom-ca.md

      
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                MuruganChandrasekar
                / self-signed-certificate-with-custom-ca.md
            
            
              Created
              September 28, 2022 17:13
                — forked from fntlnz/self-signed-certificate-with-custom-ca.md
            
              
                Self Signed Certificate with Custom Root CA
              
          
    Create Root CA (Done once)

Create Root Key

Attention: this is the key used to sign the certificate requests, anyone holding this can sign certificates on your behalf. So keep it in a safe place!
openssl genrsa -des3 -out rootCA.key 4096

  
## .colors
# Colors
end="\033[0m"
black="\033[0;30m"
blackb="\033[1;30m"
white="\033[0;37m"
whiteb="\033[1;37m"
red="\033[0;31m"
redb="\033[1;31m"
green="\033[0;32m"
greenb="\033[1;32m"

## update-git.sh
#!/bin/bash
sudo add-apt-repository -y ppa:git-core/ppa
sudo apt-get update
sudo apt-get install git -y

## regexCheatsheet.js
let regex;

/* matching a specific string */
regex = /hello/; // looks for the string between the forward slashes (case-sensitive)... matches "hello", "hello123", "123hello123", "123hello"; doesn't match for "hell0", "Hello"
regex = /hello/i; // looks for the string between the forward slashes (case-insensitive)... matches "hello", "HelLo", "123HelLO"
regex = /hello/g; // looks for multiple occurrences of string between the forward slashes...

/* wildcards */
regex = /h.llo/; // the "." matches any one character other than a new line character... matches "hello", "hallo" but not "h\nllo"
regex = /h.*llo/; // the "*" matches any character(s) zero or more times... matches "hello", "heeeeeello", "hllo", "hwarwareallo"

## iptables_rules.sh
# Modify this file accordingly for your specific requirement.
# http://www.thegeekstuff.com
# 1. Delete all existing rules
iptables -F

# 2. Set default chain policies
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP
	Install Python 3.7.0 on CentOS/RHEL 7

	1.Requirements:

	yum install gcc openssl-devel bzip2-devel

	2.Download Python 3.7:

	cd /usr/src
	wget https://www.python.org/ftp/python/3.7.0/Python-3.7.0.tgz
	[global]

	read raw = Yes
	write raw = Yes
	socket options = TCP_NODELAY IPTOS_LOWDELAY SO_RCVBUF=131072 SO_SNDBUF=131072
	min receivefile size = 16384
	use sendfile = true
	aio read size = 16384
	aio write size = 16384
	protocol = SMB3
	# The VirtualBox documentation[1] for how to install guest additions
	# for Linux on a virtual host is somewhat messy. So here is what
	# I did to make it work.

	# Install the packages required
	yum update
	yum install gcc kernel-devel make

	reboot

	# WELCOME TO SQUID 2.7.STABLE9
	# ----------------------------
	#
	# This is the default Squid configuration file. You may wish
	# to look at the Squid home page (http://www.squid-cache.org/)
	# for the FAQ and other documentation.
	#
	# The default Squid config file shows what the defaults for
	# various options happen to be. If you don't need to change the
	# Colors
	end="\033[0m"
	black="\033[0;30m"
	blackb="\033[1;30m"
	white="\033[0;37m"
	whiteb="\033[1;37m"
	red="\033[0;31m"
	redb="\033[1;31m"
	green="\033[0;32m"
	greenb="\033[1;32m"
	#!/bin/bash
	sudo add-apt-repository -y ppa:git-core/ppa
	sudo apt-get update
	sudo apt-get install git -y
	let regex;

	/* matching a specific string */
	regex = /hello/; // looks for the string between the forward slashes (case-sensitive)... matches "hello", "hello123", "123hello123", "123hello"; doesn't match for "hell0", "Hello"
	regex = /hello/i; // looks for the string between the forward slashes (case-insensitive)... matches "hello", "HelLo", "123HelLO"
	regex = /hello/g; // looks for multiple occurrences of string between the forward slashes...

	/* wildcards */
	regex = /h.llo/; // the "." matches any one character other than a new line character... matches "hello", "hallo" but not "h\nllo"
	regex = /h.llo/; // the "" matches any character(s) zero or more times... matches "hello", "heeeeeello", "hllo", "hwarwareallo"
	# Modify this file accordingly for your specific requirement.
	# http://www.thegeekstuff.com
	# 1. Delete all existing rules
	iptables -F

	# 2. Set default chain policies
	iptables -P INPUT DROP
	iptables -P FORWARD DROP
	iptables -P OUTPUT DROP