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mlsaito / base64.txt
Last active May 22, 2018
Convert strings to Base64 encoding in MacOS using OpenSS
View base64.txt
Encoding to Base64:
$ echo '' | openssl base64
> bWFrb0ByaW5nY2FwdGNoYS5jb206c2FtcGxlUGFzc3dvcmQK
Decoding from Base64:
$ echo 'bWFrb0ByaW5nY2FwdGNoYS5jb206c2FtcGxlUGFzc3dvcmQK' | openssl base64 -d
mlsaito /
Last active Jun 14, 2018
Docker Cheatsheet

Remove any stopped containers and all unused images (not just dangling images):

$ docker system prune -a

Stop all docker processes:

$ docker stop $(docker ps -a -q)
mlsaito / get_users_info.bash
Last active Jun 14, 2018
Execute Redis commands via Bash
View get_users_info.bash
#!/usr/bin/env bash
#! This will output info to `users_info.csv`
echo "Getting info from Redis. . ."
redis-cli ping
for i in {1..29885}; do
#! as of 2018, we can use this: EMAIL=$(command) instead
#! Reference:
mlsaito /
Last active Jun 15, 2018
Deploy Static Files to Google App Engine using Python (Always Free Tier!)

Deploy Static Files to Google App Engine using Python (Always Free Tier!)

By default, GAE (Google App Engine) supports Python as one of their default run time, which is always free!

Advantages of deploying static site to Google App Engine:

  1. It's always free! Google Cloud Platform provides always-free-tier for standard environment - hence Python!
  2. Free, auto-renewing SSL cert for custom domains.
  3. Direct traffic to instance instead of routing it through cloudflare for free cert.
  4. Makes deployment easier in just one line (using gcloud CLI tool).
mlsaito /
Created Jun 16, 2018
Find and kill processes listening on a port

Find processes listening on a port:

$ lsof -i :3000

Kill process:

$ kill -9 <PID>
mlsaito /
Last active Jun 18, 2018
cURL Cheatsheet

cURL with Basic Authorization:

$ cURL -X POST -H "Authorization: Basic YWxhZGRpbjpvcGVuc2VzYW1l" https://localhost:3000

cURL with username and password (pretty much same with Basic Auth):

$ curl -X POST -H "Content-Type: application/json" \
     --user "usernameorclient_id:passwordorclient_secret" \
mlsaito /
Created Aug 14, 2018
SSH into ElastiCache - Redis

Create a tunnel on your local:

$ ssh -f -N -L6379:<your redis node endpoint>:6379 <your EC2 node that you use to connect to redis> -i "key.pem"

Connect to redis exposed on your local:

$ redis-cli -h -p 6379
mlsaito /
Last active Aug 21, 2018
Git Cheatsheet

Fix Previous Commits

$ git commit --fixup=8a465186
$ git rebase -i --autosquash 8a465186~1

Cherry Picking

mlsaito /
Last active Aug 21, 2018
kubectl Cheat Sheet

Get a list of currently running Pod names:

$ kubectl get pods -o go-template --template '{{range .items}}{{}}{{"\n"}}{{end}}'

SSH directly into a pod:

$ kubectl exec --namespace <namespace_name> -it <pod_name> -- bash
mlsaito /
Created Nov 5, 2018 — forked from Kartones/
PostgreSQL command line cheatsheet


Magic words:

psql -U postgres

Some interesting flags (to see all, use -h or --help depending on your psql version):

  • -E: will describe the underlaying queries of the \ commands (cool for learning!)
  • -l: psql will list all databases and then exit (useful if the user you connect with doesn't has a default database, like at AWS RDS)
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