hudon

Verifying that +hudon is my Bitcoin username. You can send me #bitcoin here: https://onename.io/hudon

hudon

Keybase proof

I hereby claim:

• I am hudon on github.
• I am hudon (https://keybase.io/hudon) on keybase.
• I have a public key whose fingerprint is CCF4 66F0 9D45 FFFA E97D 59E2 9C99 4054 9B44 7CFC

To claim this, I am signing this object:

hudon

cat > /var/tmp/log-truncate <<EOF
#!/bin/sh
set -eux
cd /var/lib/docker/containers
for id in *
do
  logfile="\${id}/\${id}-json.log"
  [ -e "\${logfile}" ] && truncate -s 0 "\${logfile}"
done
btrfs balance start -v -dusage=20 /var/lib/docker/btrfs

hudon

#!/bin/bash

# Docker can't pass newlines to containers if there are \n in variables in
# --env-file files. This tool creates a $1.exported file with newlines that
# can be sourced before running your container and a $1.vars for you to pass
# to --env-files so docker passes those variables to the container.

# Usage:
# dockerize-env .env
# This creates: .env.vars and .env.exported

hudon

def self.encrypt(data, crt_pem)
  cert = OpenSSL::X509::Certificate.new(crt_pem)
  rsa = cert.public_key

  aes = OpenSSL::Cipher::Cipher.new('aes-256-cbc')
  aes.encrypt
  key = aes.random_key.unpack('H*')[0]
  iv  = aes.random_iv.unpack('H*')[0]

  ciphertext = aes.update(data)

hudon

# decrypt /path/to/decrypted/target
# assumes existence of target.iv, target.key (aes-256-cbc), target.enc (encrypted target)
decrypt () {
  local IV=`base64 -d < "$1.iv" | openssl rsautl -decrypt \
    -inkey /etc/ssl/private/private.key`
  local KEY=`base64 -d < "$1.key" | openssl rsautl -decrypt \
    -inkey /etc/ssl/private/private.key`
  openssl aes-256-cbc -d -a -in "$1.enc" -out "$1" -iv "$IV" -K "$KEY"
}

hudon

# /bin
#gists.txt
#https://github.com/gist/hudon/0ccd3601425b25b5e559
#https://github.com/gist/hudon/89254003f8d5491a2e1d
# ...
#
while read -r in
do
  url=${in/gist\/andy/gist}.git
  url=${url/https:\/\/github.cbhq.net/[email protected]:}

hudon

#!/bin/bash
find . | grep 'MacBook' | while read -r line ; do ; mv "$line" $(echo "$line" | sed 's/ (Ja.*MacBook.*17)//')  ; done

hudon

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.

hudon

byteSum :: [Word8] -> [Word8] -> [Word8]
byteSum = byteSum' 0
  where
    byteSum' 0 [] [] = []
    byteSum' 1 [] [] = [1]
    byteSum' carry (x:xs) (y:ys) =
        let v = x + y + carry
        in v : byteSum' (if v < x || v < y then 1 else 0) xs ys