Anh Trinh ptgamr

## tmux-cheatsheet.markdown

      
              1 file
            
          
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                MohamedAlaa
                / tmux-cheatsheet.markdown
            
            
              Last active
              May 7, 2024 06:03
            
              
                tmux shortcuts & cheatsheet
              
          
    tmux shortcuts & cheatsheet

start new:
tmux

start new with session name:
tmux new -s myname


## postgres_queries_and_commands.sql
-- show running queries (pre 9.2)
SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
FROM pg_stat_activity
WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
ORDER BY query_start desc;

-- show running queries (9.2)
SELECT pid, age(clock_timestamp(), query_start), usename, query
FROM pg_stat_activity
WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'

## introrx.md

      
              7 files
            
          
              2516 forks
            
          
              468 comments
            
          
              21904 stars
            
          
                staltz
                / introrx.md
            
            
              Last active
              May 6, 2024 01:44
            
              
                The introduction to Reactive Programming you've been missing
              
          
    The introduction to Reactive Programming you've been missing

(by @andrestaltz)

This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.


## slim-redux.js
function mapValues(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    result[key] = fn(obj[key], key);
    return result;
  }, {});
}

function pick(obj, fn) {
  return Object.keys(obj).reduce((result, key) => {
    if (fn(obj[key])) {

## postgres-cheatsheet.md

      
              1 file
            
          
              1127 forks
            
          
              66 comments
            
          
              3490 stars
            
          
                Kartones
                / postgres-cheatsheet.md
            
            
              Last active
              May 3, 2024 20:51
            
              
                PostgreSQL command line cheatsheet
              
          
    PSQL

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)


## docker-cleanup-resources.md

      
              1 file
            
          
              644 forks
            
          
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              2762 stars
            
          
                bastman
                / docker-cleanup-resources.md
            
            
              Created
              March 31, 2016 05:55
            
              
                docker cleanup guide: containers, images, volumes, networks
              
          
    Docker - How to cleanup (unused) resources

Once in a while, you may need to cleanup resources (containers, volumes, images, networks) ...
delete volumes

// see: https://github.com/chadoe/docker-cleanup-volumes

$ docker volume rm $(docker volume ls -qf dangling=true)

$ docker volume ls -qf dangling=true | xargs -r docker volume rm

  
## clean-up-boot-partition-ubuntu.md

      
              1 file
            
          
              288 forks
            
          
              135 comments
            
          
              1093 stars
            
          
                ipbastola
                / clean-up-boot-partition-ubuntu.md
            
            
              Last active
              May 2, 2024 01:27
            
              
                Safest way to clean up boot partition - Ubuntu 14.04LTS-x64, Ubuntu 16.04LTS-x64
              
          
    Safest way to clean up boot partition - Ubuntu 14.04LTS-x64, Ubuntu 16.04LTS-x64

Reference
Case I: if /boot is not 100% full and apt is working

1. Check the current kernel version

$ uname -r 


## tmux.md

      
              1 file
            
          
              759 forks
            
          
              43 comments
            
          
              3535 stars
            
          
                andreyvit
                / tmux.md
            
            
              Created
              June 13, 2012 03:41
            
              
                tmux cheatsheet
              
          
    tmux cheat sheet

(C-x means ctrl+x, M-x means alt+x)
Prefix key

The default prefix is C-b. If you (or your muscle memory) prefer C-a, you need to add this to ~/.tmux.conf:
remap prefix to Control + a


## roles_invesitgation.md

      
              1 file
            
          
              57 forks
            
          
              22 comments
            
          
              289 stars
            
          
                facultymatt
                / roles_invesitgation.md
            
            
              Last active
              April 16, 2024 09:31
            
              
                Roles and permissions system for Nodejs
              
          
    ACL / Roles + Permissions

https://github.com/djvirgen/virgen-acl
Simple and elegant, create your own checks. No middleware?
https://github.com/OptimalBits/node_acl
Use as middleware, create your own roles and access. Great choice.
https://github.com/tschaub/authorized
Similar to connect roles... but a bit more robust? you can create roles and action, and associate many roles with that action

  
## box-shadow.html
<!DOCTYPE html>
<html>
	<head>
		<title>Box Shadow</title>

		<style>
			.box {
				height: 150px;
				width: 300px;
				margin: 20px;
	-- show running queries (pre 9.2)
	SELECT procpid, age(clock_timestamp(), query_start), usename, current_query
	FROM pg_stat_activity
	WHERE current_query != '<IDLE>' AND current_query NOT ILIKE '%pg_stat_activity%'
	ORDER BY query_start desc;

	-- show running queries (9.2)
	SELECT pid, age(clock_timestamp(), query_start), usename, query
	FROM pg_stat_activity
	WHERE query != '<IDLE>' AND query NOT ILIKE '%pg_stat_activity%'
	function mapValues(obj, fn) {
	return Object.keys(obj).reduce((result, key) => {
	result[key] = fn(obj[key], key);
	return result;
	}, {});
	}

	function pick(obj, fn) {
	return Object.keys(obj).reduce((result, key) => {
	if (fn(obj[key])) {
	<!DOCTYPE html>
	<html>
	<head>
	<title>Box Shadow</title>

	<style>
	.box {
	height: 150px;
	width: 300px;
	margin: 20px;