gregjhogan’s gists

gregjhogan / ubuntu-back-blackground-color.sh

Created March 2, 2020 19:40

ubuntu black background color

	gsettings set org.gnome.desktop.background picture-options 'none'
	gsettings set org.gnome.desktop.background primary-color '#000000'

gregjhogan / raspberry-pi-ubuntu-provisioning.sh

Created December 11, 2019 22:37

change default username after installing ubuntu on raspberry pi

	NEWNAME=""
	FULLNAME=""
	usermod -l $NEWNAME -d /home/$NEWNAME -m ubuntu
	groupmod -n $NEWNAME ubuntu
	chfn -f $FULLNAME $NEWNAME

gregjhogan / azure-storage-blob-git-repo.sh

Created September 25, 2019 21:43

git repo backed by azure blob storage

	# create public azure storage account <account> with container 'git-test'
	az storage account create -n <account> -g <resource-group> -l <region> --sku Standard_LRS
	az storage container create --account-name <account> -n git-test --public-access blob

	# create a
	mkdir git-test && cd git-test
	git init
	echo "Hello World!" > test.txt
	git add test.txt && git commit -m 'initial commit'

gregjhogan / redis-list-progress-bar.sh

Created August 25, 2019 05:26

redis list progress bar

# watch the progress of a redis list go down

REDIS_HOST=<redis-hostname> REDIS_LIST=<redis-listname> TOTAL=<optional> python -c $'import os; import redis; from tqdm import tqdm; from time import sleep; r = redis.Redis(host=os.getenv("REDIS_HOST")); plen = r.llen(os.getenv("REDIS_LIST")); total = int(os.getenv("TOTAL", 0)); progress = tqdm(total=(total or plen), initial=(total-plen if total else 0));\nwhile plen > 0: clen = r.llen(os.getenv("REDIS_LIST")); progress.update(plen-clen); plen = clen; sleep(1);\nprogress.close()'

gregjhogan / base64-decode-file-names.sh

Created August 15, 2019 20:17

base64 decode file names in directory that have base64 encoded names

find <dir> -type f | xargs -L 1 -I {} basename {} | xargs -L 1 -I {} printf "{}\nCg==" | base64 -d

gregjhogan / base64-decode-file-names.sh

Last active August 15, 2019 20:21

base64 decode file names in directory that have base64 encoded names

find <dir> -type f | xargs -L 1 -I {} basename {} | xargs -L 1 -I {} printf "{}\nCg==\n" | base64 -d

gregjhogan / mysql-schema-change-with-all-clients-disconnected.sh

Created July 24, 2019 07:43

MySQL schema change while all clients are disconnected

	# block all connections
	sudo iptables -A INPUT -p tcp --dport 3306 -j DROP
	# kill all connections
	docker exec -it <container-name> mysql -sN -e "select concat('kill ',id,';') from information_schema.processlist;" > kill.txt
	docker exec -i <container-name> mysql < kill.txt
	# make schema changes
	ALTER TABLE ...
	# allow connections again
	sudo iptables -D INPUT -p tcp --dport 3306 -j DROP

gregjhogan / azure-storage-account-container-size.sh

Last active June 6, 2019 23:16

get size of all files in an azure storage account container

echo $(az storage blob list --account-name <account-name> --container-name <container-name> --query "[*].[properties.contentLength]" --output tsv --num-results '*' | paste --serial --delimiters=+ | bc | xargs printf "%'d") bytes

gregjhogan / read-vin.py

Last active May 25, 2025 13:02

Read VIN using read memory by address

	import sys
	import os
	import struct
	import time

	from python import Panda

	from enum import IntEnum
	from Queue import Queue, Empty
	import threading

gregjhogan / speedtest-cli.sh

Last active June 7, 2019 21:26

bash speed test

curl https://raw.githubusercontent.com/sivel/speedtest-cli/master/speedtest.py | python -

Greg Hogan gregjhogan