Rohit Farmer rohitfarmer

To ssh to google compute engine instance.

First generate a ssh key pair on your local machine; use the username on the instance else it will create the user same as user on the local machine.

ssh-keygen -t rsa -f ~/.ssh/name -C username

chmod 400 ~/.ssh/name

Then login to your compute engine dashboard and click on metadata tab on the left. Go to ssh keys section and click edit,

Find

find /path/ -name filename* 2>/dev/null # This will redirect all the permission denied statements to null.

Link to docs: http://docs.dal.net/docs/chanserv.html

SSH connection to Dal Net: /connect -ssl punch.dal.net 6697

Identify nick name on dal net: /msg NickServ@services.dal.net IDENTIFY password

Change or set channel topic: /topic

Git and GitHub

Configure your Git username/email

You typically configure your global username and email address after installing Git. However, you can do so now if you missed that step or want to make changes. After you set your global configuration, repository-specific configuration is optional.

Git configuration works the same across Windows, macOS, and Linux. To set your global username/email configuration:

Python Virtual Environments

Create isolated python environment per project with all the packages needed for that particular project. Commands copied from https://realpython.com/python-virtual-environments-a-primer/.

Using the base module venv

Create the environment

python3 -m venv venv (name) --upgrade-deps

User related

sudo -u nobody bash Change the user to a desired name with a desired shell.

Cron Jobs Log

grep CRON /var/log/syslog

Monitoring Processes (ps command)

More information at (https://www.tecmint.com/ps-command-examples-for-linux-process-monitoring/)

ps -eo user,pid,ppid,cmd,%mem,%cpu --sort=-%mem | head # Top running processes by highest memory usage.

My SQLite Cookbook

For general command line help
https://sqlite.org/cli.html

Open/attach a database

sqlite3 database.db

Show tables

.tables

To route everything running in a shell through tor

install tor
install torsocks

source torsocks on #everything in this particular shell will be routed through tor

	#!/usr/bin/env python
	'''
	Chemical data about a molecule.

	Molecules are defined by SMILES strings. Can work out logP values, Lipinski's
	rules, etc...

	Uses rdkit
	'''

	Verifying Which Ports Are Listening
	-----------------------------------
	#install nmap first
	https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/3/html/Security_Guide/s1-server-ports.html

	nmap -sT -O localhost
	128.121.0.253
	www.google.com etc