vlado

# ** ERROR 1 **
# FATAL:  lock file "postmaster.pid" already exists
# HINT:  Is another postmaster (PID 4646) running in data directory "/usr/local/var/postgres"?
#
# ** ERROR 2 **
# Is the server running locally and accepting connections on Unix domain socket "/tmp/.s.PGSQL.5432"?
#
# To fix one of this errors:

cat /usr/local/var/postgres/postmaster.pid # pid is the number on first line

DominikDary

require 'rubygems'
require 'irb/completion'
require 'irb/ext/save-history'

ARGV.concat [ "--readline",
              "--prompt-mode",
              "simple" ]

# 25 entries in the list
IRB.conf[:SAVE_HISTORY] = 50

bstahlhood

//
//  UIImage+Retina4.h
//  StunOMatic
//
//  Created by Benjamin Stahlhood on 9/12/12.
//  Copyright (c) 2012 DS Media Labs. All rights reserved.
//

#import <UIKit/UIKit.h>

hfossli

- (void)viewDidLoad
{
    [super viewDidLoad];
    
    UIView *view = [[UIView alloc] initWithFrame:CGRectMake(100, 100, 300, 200)];
    view.backgroundColor = [UIColor blueColor];
    [self.view addSubview:view];
    
    [view addObserver:self forKeyPath:@"frame" options:0 context:NULL];

joepie91

module.exports = function(duration) {
	return function(){
		return new Promise(function(resolve, reject){
			setTimeout(function(){
				resolve();
			}, duration)
		});
	};
};

ishu3101

Transfer a gist to a GitHub repository

clone the gist

git clone https://gist.github.com/ishu3101/6fb35afd237e42ef25f9

rename the directory

mv 6fb35afd237e42ef25f9 ConvertTo-Markdown

change the working directory to the newly renamed directory

cd ConvertTo-Markdown

spalladino

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

bastman

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

swrobel

#!/usr/bin/env ruby

# Usage: dedup-imovie-library LIBRARY ORIGINALS
#
# Goes through an iMovie 10 library and replaces all the "Original Media" with
# symlinks to the actual original media, in order to conserve disk space. Note
# that because they're symlinks, if the path to the originals changes (e.g. you
# rename the external drive they are on) then the links will be broken.
#
# This assumes you've already imported the files into iMovie and waited for them

ryrych

Recording

• Ensure that fullscreen is on
• Disable spell checker
• Record using Quicktime (no audio)
• If possible select rectangle recording area
• Save with highest possible quality e.g 1920x1080
• Hide cursor if not needed

KeyCastr / ShowKeys (https://github.com/jmhobbs/ShowKeys)