jorgemsrs

# variation of https://gist.github.com/knu/111055
# Rename tags named #.#.# or v#.#.# to v#.#.# and push the tag changes
git tag -l | while read t; do n="v${t#v}"; echo "$t - $n"; git tag $n $t; git push --tags ; git tag -d $t; git push origin :refs/tags/$t ; done

jorgemsrs

#!/usr/bin/env node

const crypto = require('crypto');

const ALGORITHM = 'aes-256-cbc';
const ENCRYPTION_KEY = crypto.randomBytes(32); // For example purposes only. This should come from a secure store. Must be 256 bits (32 chars)
const IV_LEN = 16; // For AES this is always 16

// Symmetric encryption
function encrypt(text) {

jorgemsrs

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

jorgemsrs

/**
 * Templated method that uses a underlying stringstream to perform  
 * conversions from string references.
 */
template<class T> 
static T fromString(const std::string &s) {
    std::istringstream stream(s);
    T t;
    stream >> t;
    return t;

jorgemsrs

SELECT 
   TABLE_SCHEMA,
   TABLE_NAME,
   Data_free
FROM 
   information_schema.TABLES
WHERE 
   TABLE_SCHEMA NOT IN ('information_schema','mysql')
   AND Data_free > 0;

jorgemsrs

echo -n `date` ' ';curl --write-out "Time Lookup: %{time_namelookup} Time Connect: %{time_connect}   Time to FB: % time_starttransfer} Download Size: %{size_download}   HTTP Status: %{http_code}   Num Connects: %{num_connects}  Num Redirects: %{num_redirects}\n" --silent --output /dev/null __YOUR_WEBSITE.domain.tld__HERE >> /tmp/uptime.log

jorgemsrs

#!/usr/bin/env bash
# @author josh nichols
# @link http://technicalpickles.com/posts/creating-a-svn-authorsfile-when-migrating-from-subversion-to-git/
authors=$(svn log -q | grep -e '^r' | awk 'BEGIN { FS = "|" } ; { print $2 }' | sort | uniq)
for author in ${authors}; do
  echo "${author} = NAME <USER@DOMAIN>";
done