jaytaylor

Bash shell programming snippets

Quick references to common and useful bash programming snippets

jaytaylor

URL shortener Base-62 encoder / decoder C++ Proof-of-Concept

Author: Jay Taylor

Date: 2019-07-08

Purpose: Created as a C++ reference for SO: How do I create a URL shortener?.

How to use

jaytaylor

Problem Statement

I've been hitting cases where kubernetes cluster actions are blocked due to priorityClass being absent after a helm install --upgrade.

For example:

  Type     Reason        Age                  From                    Message
  ----     ------        ----                 ----                    -------
  Warning  FailedCreate  3m (x1405 over 11h)  statefulset-controller  create Pod elasticsearch-data-2 in StatefulSet elasticsearch-data failed error: pods "elasticsearch-data-2" is forbidden: no PriorityClass with name elasticsearch-data was found```

jaytaylor

/**
 * dircnt.c - a fast file-counting program.
 *
 * Written 2015-02-06 by Christopher Schultz as a programming demonstration
 * for a StackOverflow answer:
 * https://stackoverflow.com/questions/1427032/fast-linux-file-count-for-a-large-number-of-files/28368788#28368788
 *
 * This code is licensed under the Apache License 2.0. Please read the file
 * LICENSE for more information.
 *

jaytaylor

package main

// Also see the Python version: https://gist.github.com/jaytaylor/76de9c99acbfac637e68f78809dbd27e

import (
	"bytes"
	"crypto/md5"
	"encoding/base64"
	"fmt"
	"io"

jaytaylor

#!/usr/bin/python
# -*- coding: utf-8 -*-

"""
@author Jay E. Taylor <outtatime@gmail.com>

@date 2019-06-03

@description MD5 hash calculator for multi-part file uploads to S3 / object storage.

jaytaylor

#!/usr/bin/env bash

#
# @author Jay Taylor [jaytaylor.com](https://jaytaylor.com)
#
# @date 2019-03-04
#
# Sometimes Kubernetes seems to get stuck and doesn't
# delete the contents of a namespace from my cluster after
# `kubectl delete namespace X` has been run.

jaytaylor

#!/usr/bin/env python
# -*- coding: utf-8 -*-

"""
Removes a file or directory while preserving the modification time (mtime) of
the parent directory.

Pure-python implementation.
"""

jaytaylor

#!/usr/bin/env bash

##
# @author J. Elliot Taylor (@jaytaylor)
#
# @date 2018-11-14
#
# @description Andromeda postgres DB remote backup utility.
#

jaytaylor

package main

import (
	"fmt"
	"io/ioutil"
	"regexp"

	"github.com/spf13/cobra"
)