Rohit Farmer rohitfarmer

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.

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

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:

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

Find

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

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,

The basics

This is a collection of basic "recipes", many using twurl (the Swiss Army Knife for the Twitter API!) and jq to query the Twitter API and format the results. Also, some scripts to test or automate common actions.

General

To check for avialable modules module avail
List the loaded modules module list

CHPC, WUSTL

Job status: qstat -t -u username

Comet, SDSC

http://www.sdsc.edu/support/user_guides/comet.html

To get the diver info

modinfo nvidia

To get summary info

nvidia-smi
nvidia-smi --query-gpu=driver_version --format=csv,noheader

	#!/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
	'''