nashid

# create conda environment
conda create -n dgl-graph-classifier-env python=3.9
conda activate dgl-graph-classifier-env

# install torch
conda config --add channels conda-forge
conda install pytorch-cpu==1.8.0

# install install deep graph library 
conda install -c dglteam dgl

nashid

The repository for the assignment is public and Github does not allow the creation of private forks for public repositories.

The correct way of creating a private frok by duplicating the repo is documented here.

For this assignment the commands are:

1. Create a bare clone of the repository. (This is temporary and will be removed so just do it wherever.)

git clone --bare git@github.com:usi-systems/easytrace.git

nashid

#
#  Original solution via StackOverflow:
#    http://stackoverflow.com/questions/35802939/install-only-available-packages-using-conda-install-yes-file-requirements-t
#

#
#  Install via `conda` directly.
#  This will fail to install all
#  dependencies. If one fails,
#  all dependencies will fail to install.

nashid

# For Windows users# Note: <> denotes changes to be made

#Create a conda environment
conda create --name <environment-name> python=<version:2.7/3.5>

#To create a requirements.txt file:
conda list                              #Gives you list of packages used for the environment

conda list -e > requirements.txt        #Save all the info about packages to your folder

nashid

tmux vs. screen commands

---

Action	tmux	screen
start a new session	tmux tmux new tmux new-session	screen
start a new session with a name	tmux new -s name	screen -S name
re-attach a detached session	tmux attach tmux attach-session	screen -r
re-attach a detached session with a name	tmux attach -t name tmux a -t name	screen -r name
re-attach an attached session (detaching it from elsewhere)	tmux attach -dtmux attach-session -d	screen -dr

nashid

I recently came across the need to spawn multiple threads, each of which needs to write to the same file. Since the file will experience contention from multiple resources, we need to guarantee thread-safety.

NOTE: The following examples work with Python 3.x. To execute the following programs using Python 2.7, please replace threading.get_ident() with thread.get_ident(). As a result, you would need to import thread and not threading.

1. (The following example will take a very long time). It will create 200 threads, each of which will wait until a global lock is available for acquisition.

# threading_lock.py
import threading

nashid

# search for web apps with open api
curl https://api.github.com/search/repositories\?q\=web+apps+openapi\&type\=Repositories | grep html_url | awk '{print $2}'

nashid

# remove lage files from commit history

git filter-branch --index-filter "git rm -rf --cached --ignore-unmatch path_to_file" HEAD
git push origin --force --all

# git commit in the past
git commit --date="5 day ago" -m "Your commit message"

# setup credential.helper store
$ git config credential.helper store

nashid

\definecolor{ashgrey}{rgb}{0.7, 0.75, 0.71}
\begin{lstlisting}[firstnumber=1]
'use strict';

const common = require('../common');
  ... 
\end{lstlisting}	  
  \vspace{-\baselineskip}
  \begin{lstlisting}[firstnumber=10, backgroundcolor=\color{ashgrey}]
  function main({ len, n }) {

nashid

# nvm cache could get very large
nvm cache clear