GrigoriLab

tmux shortcuts & cheatsheet

start new:

tmux

start new with session name:

tmux new -s myname

GrigoriLab

MySQL

Getting started:

• http://www.sqlteaching.com/
• https://www.codecademy.com/courses/learn-sql

Related tutorials:

• MySQL-CLI
• Analyzing Business Metrics

GrigoriLab

/* Useful celery config.

app = Celery('tasks',
             broker='redis://localhost:6379',
             backend='redis://localhost:6379')

app.conf.update(
    CELERY_TASK_RESULT_EXPIRES=3600,
    CELERY_QUEUES=(
        Queue('default', routing_key='tasks.#'),

GrigoriLab

#Read multiple keys from an authorized_keys file and print the finger print

[root@server01 .ssh]# while read line; do ssh-keygen -l -f /dev/stdin <<< $line; done < authorized_keys 
2048 87:7a:4d:70:d2:10:a4:4b:b7:e1:2b:7c:77:92:25:04 /dev/stdin (RSA)
2048 7d:f0:89:94:00:09:bc:70:46:59:8d:9a:70:3b:ac:70 /dev/stdin (RSA)
2048 61:63:ee:0d:f6:d2:d8:d6:ae:37:0c:35:ae:da:51:6a /dev/stdin (RSA)

#read a key from authorized key file
[root@server01 .ssh]# ssh-keygen -l -f authorized_keys 
2048 87:7a:4d:70:d2:10:a4:4b:b7:e1:2b:7c:77:92:25:04 authorized_keys (RSA)

GrigoriLab

#!/usr/bin/env bash
#
# gh-dl-release! It works!
# 
# This script downloads an asset from latest or specific Github release of a
# private repo. Feel free to extract more of the variables into command line
# parameters.
#
# PREREQUISITES
#

GrigoriLab

from .models import Post, Category
from .decorators import action_form


class PostCategoryForm(forms.Form):
    title = 'Update category for the selected posts'
    category = forms.ModelChoiceField(queryset=Category.objects.all())


@admin.register(Post)

GrigoriLab

Processing JSON using jq

jq is useful to slice, filter, map and transform structured json data.

Installing jq

On Mac OS

brew install jq