mystix

$ echo -en "message" | openssl dgst -sha256 -hmac "key" -binary | base64 | sed -e 's/+/-/g' -e 's/\//_/g' | tr -d =
bp7ym3X__Ft6uuUn1Y_a2y_kLnIZARl2kXNDBl9Y7Uo

mystix

local luaversion = function()
    if ({false, [1] = true})[1] then   -- luacheck: ignore 314
        return 'LuaJIT'
    elseif 1 / 0 == 1 / '-0' then
        return 0 + '0' .. '' == '0' and 'Lua 5.4' or 'Lua 5.3'
    end
    local f = function() return function() end end
    return f() == f() and 'Lua 5.2' or 'Lua 5.1'
end

mystix

# MIT License

# Copyright (c) 2016 Chandler Abraham

# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:

mystix

# https://www.percona.com/blog/2008/11/07/poor-mans-query-logging/

tcpdump -i eth0 -s 0 -l -w - dst port 3306 | strings | perl -e '
while(<>) { chomp; next if /^[^ ]+[ ]*$/;
  if(/^(SELECT|UPDATE|DELETE|INSERT|SET|COMMIT|ROLLBACK|CREATE|DROP|ALTER)/i) {
    if (defined $q) { print "$q\n"; }
    $q=$_;
  } else {
    $_ =~ s/^[ \t]+//; $q.=" $_";
  }

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# === EDITOR ===
Pry.editor = 'vi'

# === PROMPT ===
Pry::Prompt.new(
    "Custom",·
    "My custom prompt",
    [    
        proc{ |obj, nest_level, _| "#{RUBY_VERSION} (#{obj}):#{nest_level} > " },
        proc{ |obj, nest_level, _| "#{RUBY_VERSION} (#{obj}):#{nest_level} * " }

mystix

Current

I am using the fantastic jq to manipulate a REST API's json, into a csv for upsertting into another database system, via its API. Once in the target system, I'm doing some date math, including rounding time stamps to 30 min intervals to allow me to do group them, for standard deviation calculation. The problem is, there is a lot of data and the database chokes when it has to round every record and then do std dev calculations on each.

• Sample.json shows a small sample of what the input data looks like, but actually it's just stdout from the curl command in the shell script.
• example-initial.sh shows the important bit of the initial shell script, that uses curl to authenticate against the data location's API, and then use jq to add a couple of columns and export to csv. It works like a charm.
• ACME-X1-A.csv is an example of the output CSV file, that's then upsertted into the target db.

Goal

mystix

Table of Contents

• set -e, -u, -x, -o pipefail
• set -e
• set -x
• set -u
• set -o pipefail
• Setting IFS
• Original Reference

set -e, -u, -x, -o pipefail

mystix

1.) Download a Nerd Font

2.) Unzip and copy to ~/.fonts

3.) Run the command fc-cache -fv to manually rebuild the font cache

mystix

1xx: Information

Code	Message	Description
100	Continue	The server has received the request headers, and the client should proceed to send the request body
101	Switching Protocols	The requester has asked the server to switch protocols
103	Checkpoint	Used in the resumable requests proposal to resume aborted PUT or POST requests

2xx: Successful

Code	Message	Description

mystix

#!/bin/bash
#
# Created by: Westley K
# Date: Aug 14, 2018
#
# run this in your terminal, and
# you will get nice colors and effects!
#