Steven Chen gundamew

Debug zsh startup time

Inject profiling code

At the beginning of your .zshrc add following: zmodload zsh/zprof

and at the end add: zprof

This will load zprof mod and display what your shell was doing durung your initialization.

How to force a file download in the browser?

The use case is simple, you have /reports/593874951.pdf on your web server and want to let your user download it — and if possible with a meaningful name.

In the past, you may tried using the Content-Disposition HTTP header to achieve this, but today, with Safari getting the support for the download attribute it’s going to simplify a lot of things.

Using the download attribute is simple as pie:

<a href="/reports/593874951.pdf" download="report.pdf">
 Download report

Email address syntax validation? Let the browser do it (without regexp)

Here is a simple and robust way to check for the validity of an email address syntax directly in the browser. No need for crazy regular expressions.

e = document.createElement('input')
e.type = 'email'
// check some email addresses
e.value = 'hi@'

Searching bash or zsh history

More often than not, you already typed yesterday the commands you’re about to use today. Wouldn’t it be handy to be able to retrieve the long command instead of typing them yet another time?

Hit Ctrl+R, you’ll see:

(reverse-i-search)`':

	def findSmallestDivisor(s,t):
	if(check_if_divisible(s, t)):
	return len(find_shortest_repeating_substring(t))
	else:
	return -1

	def check_if_divisible(s, t):
	is_length_divisible = (len(s) % len(t)) == 0
	if(is_length_divisible):
	return t*(len(s)//len(t)) == s

	let regex;

	/* matching a specific string */
	regex = /hello/; // looks for the string between the forward slashes (case-sensitive)... matches "hello", "hello123", "123hello123", "123hello"; doesn't match for "hell0", "Hello"
	regex = /hello/i; // looks for the string between the forward slashes (case-insensitive)... matches "hello", "HelLo", "123HelLO"
	regex = /hello/g; // looks for multiple occurrences of string between the forward slashes...

	/* wildcards */
	regex = /h.llo/; // the "." matches any one character other than a new line character... matches "hello", "hallo" but not "h\nllo"
	regex = /h.llo/; // the "" matches any character(s) zero or more times... matches "hello", "heeeeeello", "hllo", "hwarwareallo"

	# You can place this into '.bash_profile' to make it more accessible.

	# sslstatus google.com:443

	sslstatus()
	{
	echo
	a=(${1//:/ })
	PORT=443
	if [ "${#a[@]}" -ne 2 ]; then

	# Generate a new pgp key: (better to use gpg2 instead of gpg in all below commands)
	gpg --gen-key
	# maybe you need some random work in your OS to generate a key. so run this command: `find ./* /home/username -type d \| xargs grep some_random_string > /dev/null`

	# check current keys:
	gpg --list-secret-keys --keyid-format LONG

	# See your gpg public key:
	gpg --armor --export YOUR_KEY_ID
	# YOUR_KEY_ID is the hash in front of `sec` in previous command. (for example sec 4096R/234FAA343232333 => key id is: 234FAA343232333)

	<?php

	namespace App\Providers;

	use Illuminate\Support\Collection;
	use Illuminate\Pagination\LengthAwarePaginator;

	class AppServiceProvider extends ServiceProvider
	{
	public function boot()

	# Install brew
	/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

	# Install composer
	brew install homebrew/php/composer

	### PHPCS
	composer global require "squizlabs/php_codesniffer=*"

	# Add to your .bash_profile