Basic Steps

User cases (description of sequences of events that, taken together, lead to a system doing something useful)
- Who is going to use it?
- How are they going to use it?

praveen-krishn / mainpython.md

Created May 3, 2020 20:14 — forked from rochacbruno/mainpython.md

Use of __main__.py

The use of __main__.py to create executables

myprojectfolder/
    |_ __main__.py
    |_ __init__.py

Being __main__.py:

print("Hello")

praveen-krishn / latency.txt

Created July 29, 2019 06:34 — forked from jboner/latency.txt

Latency Numbers Every Programmer Should Know

	Latency Comparison Numbers (~2012)
	----------------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

praveen-krishn / autopgsqlbackup

Created July 10, 2017 04:34 — forked from matthewlehner/autopgsqlbackup

Auto PostgreSQL backup script.

	#!/bin/bash
	#
	# PostgreSQL Backup Script Ver 1.0
	# http://autopgsqlbackup.frozenpc.net
	# Copyright (c) 2005 Aaron Axelsen <axelseaa@amadmax.com>
	#
	# This script is based of the AutoMySQLBackup Script Ver 2.2
	# It can be found at http://sourceforge.net/projects/automysqlbackup/
	#
	# The PostgreSQL changes are based on a patch agaisnt AutoMySQLBackup 1.9

praveen-krishn / ora_impdp_expdp

Last active August 9, 2016 05:48 — forked from bulain/ora_impdp_expdp.bat

using expdp and impdp in oracle 10g 11g

	# For remote usage: https://oracle-base.com/articles/10g/oracle-data-pump-10g
	# create directory
	create directory dmpdir as 'c:/temp';
	select directory_name,directory_path from dba_directories;

	# expdp owner
	create user scott identified by tiger;
	grant connect, resource to scott;
	...
	grant read, write on directory dmpdir to scott;

praveen-krishn / show-remote-branch-info.sh

Created July 1, 2016 05:16 — forked from jdigger/show-remote-branch-info.sh

Too many crusty old git branches? Run this to find likely candidates for deletion. It lists all the remote branches and sorts them by age.

	#!/bin/sh

	#
	# Too many crusty old git branches? Run this to find likely candidates for deletion
	# It lists all the remote branches and sorts them by age.
	#

	#for k in `git branch -r\|awk '{print $1}'`;do echo `git show --pretty=format:"%ci %cr %cn " $k\|head -n 1`\\t$k;done\|sort -r
	for k in `git branch -r\|awk '{print $1}'`;do echo `git show --pretty=format:"%Cgreen%ci %Cblue%cr %Cred%cn %Creset" $k\|head -n 1`\\t$k;done\|sort -r

praveen-krishn / genclient

Created February 15, 2016 12:21 — forked from wsargent/genclient

Create a working(!) client certificate for use with nginx, using only keytool

	#!/bin/bash

	export PW=`pwgen -Bs 10 1`

	echo "$PW" > password

	# Create a self signed certificate & private key to create a root certificate authority.
	keytool -genkeypair -v \
	-alias clientCA \
	-keystore client.jks \

Praveen Krishnan praveen-krishn