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ashayh / index.html
Last active July 1, 2020 18:44
<!DOCTYPE html>
<meta charset="UTF-8">
<style>
.node circle {
fill: #fff;
stroke: steelblue;
stroke-width: 3px;
}
@ashayh
ashayh / jenkins-keygen.sh
Created March 5, 2018 23:43 — forked from iocanel/jenkins-keygen.sh
Jenkins key generation
#Generate master.key and secret
MAGIC="::::MAGIC::::"
mkdir -p /var/jenkins_home/secrets
openssl rand -hex 128 > /var/jenkins_home/secrets/master.key
openssl dgst -sha256 -binary /var/jenkins_home/secrets/master.key > /tmp/master.hashed
HEX_MASTER_KEY=`head -c 16 /tmp/master.hashed | xxd -l 16 -p`
openssl rand 259 > /tmp/base
echo $MAGIC >> /tmp/base
openssl enc -aes-128-ecb -in /tmp/base -K $HEX_MASTER_KEY -out /var/jenkins_home/secrets/hudson.util.Secret
@ashayh
ashayh / logging.bash
Created July 7, 2017 22:27 — forked from goodmami/logging.bash
Basic logging commands for Linux shell scripts
#!/bin/bash
##
## Simple logging mechanism for Bash
##
## Author: Michael Wayne Goodman <goodman.m.w@gmail.com>
## Thanks: Jul for the idea to add a datestring. See:
## http://www.goodmami.org/2011/07/simple-logging-in-bash-scripts/#comment-5854
## Thanks: @gffhcks for noting that inf() and debug() should be swapped,
## and that critical() used $2 instead of $1
@ashayh
ashayh / bash functrace
Created July 7, 2017 22:01 — forked from ryo1kato/bash functrace
Backtrace for bash
#!/bin/bash
set -ue
bash_trace () {
typeset -i i=0
for func in "${FUNCNAME[@]}"
do
printf '%15s() %s:%d\n' \
"$func" "${BASH_SOURCE[$i]}" "${BASH_LINENO[$i]}"
@ashayh
ashayh / performance.txt
Created June 12, 2017 20:46 — forked from dstroot/performance.txt
Performance Tuning your TCP Stack
#!/bin/bash
echo "*****************************************"
echo " Based on information from Google"
echo " http://dev.chromium.org/spdy/spdy-best-practices"
echo "*****************************************"
sudo su
yum –y update
echo "*****************************************"
echo " Changing initcwnd and initrwnd"
echo " Step 1: check route settings."
@ashayh
ashayh / ntp.rst
Created June 10, 2017 20:28
@ashayh
ashayh / oracle_export.rb
Created November 4, 2016 21:08 — forked from rogerleite/oracle_export.rb
Access Oracle with jruby using JDBC. Export data to json format.
=begin
Requisitos Minimos para rodar este script:
#jruby 1.1 ou superior (nao testei com superior :D)
apt-get install jruby
#baixar o oracle jdbc (para o 10g, ou procure a versão que deseje) de:
http://www.oracle.com/technology/software/tech/java/sqlj_jdbc/htdocs/jdbc_10201.html
#copiar o ojdbc14.jar para (usar sudo):
@ashayh
ashayh / load-balance.sh
Created October 2, 2016 18:23 — forked from girst/load-balance.sh
Simple Linux Load Balancing with `iproute2`
#!/bin/bash
# Load balance multiple internet connections. Requires iproute2, awk and grep.
# (C) 2016 Tobias Girstmair, isticktoit.net, GPLv2
# Also useful: speedometer -l -r eth1 -t eth1 -m $(( 1024 * 1024 * 3 / 2 ))
# Not much user error checking is done - only pass working network connections
# script needs root to work and at least two connections to be useful
[ $EUID -eq 0 -a $# -ge 2 ] || {
echo "Usage (as root): $0 iface1 iface2 ..." >&2
@ashayh
ashayh / keybase.md
Last active February 5, 2016 20:32

Keybase proof

I hereby claim:

  • I am ashayh on github.
  • I am ashayh (https://keybase.io/ashayh) on keybase.
  • I have a public key ASANiDn2c0dctzJkY3xl7U72z58giysGDOQ46S1OC3yd7Ao

To claim this, I am signing this object:

@ashayh
ashayh / The Technical Interview Cheat Sheet.md
Last active August 29, 2015 14:28 — forked from tsiege/The Technical Interview Cheat Sheet.md
This is my technical interview cheat sheet. Feel free to fork it or do whatever you want with it. PLEASE let me know if there are any errors or if anything crucial is missing. I will add more links soon.

Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

  • Stores data elements based on an sequential, most commonly 0 based, index.
  • Based on tuples from set theory.