indrayam

In OSX:
-------
	echo "Token File = $TOKEN_FILE exists ..."
	filetime=$(stat -f "%m" -t "%s" $TOKEN_FILE)
	currtime=$(date +"%s")
	secs_elapsed=$(($currtime-$filetime))

In Linux:
---------
	echo "Token File = $TOKEN_FILE exists ..."

indrayam

# Grab the time, the userid and the git version
cat atlassian-stash-access.log | awk -F'[|]' '($4 ~ /[:lower:]/) && ($7 ~/"" "git*/) {print $5, $4, $7;}' > phase1.txt

# Parse the git version number from the git details
cat phase1.txt | awk '{print $1, $2, $3, $5}' | sed s/\"//g > phase 2.txt

indrayam

How to set up stress-free SSL on an OS X development machine

One of the best ways to reduce complexity (read: stress) in web development is to minimize the differences between your development and production environments. After being frustrated by attempts to unify the approach to SSL on my local machine and in production, I searched for a workflow that would make the protocol invisible to me between all environments.

Most workflows make the following compromises:

• Use HTTPS in production but HTTP locally. This is annoying because it makes the environments inconsistent, and the protocol choices leak up into the stack. For example, your web application needs to understand the underlying protocol when using the secure flag for cookies. If you don't get this right, your HTTP development server won't be able to read the cookies it writes, or worse, your HTTPS production server could pass sensitive cookies over an insecure connection.

• Use production SSL certificates locally. This is annoying

indrayam

#!/usr/bin/perl -w
#
$num_of_args = $#ARGV + 1;
if ($num_of_args != 1) {
  print "Usage: ns2date.pl <epochtime in nanoseconds>\n";
  exit;
}

$ns = $ARGV[0];
print scalar localtime($ns / 1000000000) . "\n";

indrayam

Pseudocode:

Y = Base64URLEncode(Header) + ‘.’ + Base64URLEncode(Payload)
JWT = Y + ‘.’ + Base64URLEncode(HMACSHA256(Y))

The steps called out here should work on a Mac as well. The only thing that might be different is the sed command used below. Instead of using -E, you will have to use -r to run sed with extended regular expression support

Use data from this tutorial:

scotch.io

indrayam

[Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, Florida, Georgia, Hawaii, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Maryland, Massachusetts, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Oregon, Pennsylvania, Rhode Island, South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming]

indrayam

# These commands will ONLY work if you are using GNU 'du', 'find' and 'sort' commands
# Top 10 files by recursively diving inside the current folder (skip .git and .svn folders)
find . -type d \( -iregex ".*git" -o -iregex ".*svn" \) -prune -o -type f -exec du -Sh {} + | sort -rh | head -n 10

# Top 10 files by recursively diving inside the current folder (without skipping any folders)
find . -type f -exec du -Sh {} + | sort -rh | head -n 10

# Top 10 directories by recursively diving inside the current folder (skip .git and .svn folders)
du -Sh --exclude=".git" --exclude=".svn" | sort -rh | head -n 10

indrayam

Latency Comparison Numbers
--------------------------
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

indrayam

# Steps to build and install tmux from source on Ubuntu.
# Takes < 25 seconds on EC2 env [even on a low-end config instance].
VERSION=2.5
sudo apt-get -y remove tmux
sudo apt-get -y install wget tar libevent-dev libncurses-dev
wget https://github.com/tmux/tmux/releases/download/${VERSION}/tmux-${VERSION}.tar.gz
tar xf tmux-${VERSION}.tar.gz
rm -f tmux-${VERSION}.tar.gz
cd tmux-${VERSION}
./configure

indrayam

-- minishift version: v1.12.0+daa0943
-- Starting profile 'minishift'
Found binary path at /usr/local/bin/minishift
Launching plugin server for driver virtualbox
Plugin server listening at address 127.0.0.1:56139
() Calling .GetVersion
Using API Version  1
() Calling .SetConfigRaw
() Calling .GetMachineName
(minishift) Calling .GetState