vapidbabble

h       scroll left
j       scroll down
k       scroll up
l       scroll right
gg      scroll to top of the page
G       scroll to bottom of the page
f       activate link hints mode to open in current tab
F       activate link hints mode to open in new tab
r       reload

andreyvit

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

leomelzer

1. You have Ghostscript installed, right? Otherwise sudo apt-get install ghostscript
2. This is important and installs the headers (iapi.h etc) which are required but don't come with the default Ghostscript package: sudo apt-get install libgs-dev
3. I also needed sudo apt-get install gs-esp
4. For me the pre compiled version of ImageMagick never accepted Ghostscript, so let's remove it: sudo apt-get --purge remove imagemagick
5. Get the source of ImageMagick, untar it, cd ImageMagick-xx
6. ./configure --with-gslib=yes [and what else you need]
7. Confirm in the output near the bottom gslib yes yes and not gslib yes no
8. make
9. make install
10. Run convert -list configure | grep DELEGATES => DELEGATES bzlib djvu freetype gs jpeg jng jp2 lcms png tiff x11 xml zlib

tylerneylon

-- Two dashes start a one-line comment.

--[[
     Adding two ['s and ]'s makes it a
     multi-line comment.
--]]

----------------------------------------------------
-- 1. Variables and flow control.
----------------------------------------------------

Kartones

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)

LeCoupa

/* *******************************************************************************************
 * THE UPDATED VERSION IS AVAILABLE AT
 * https://github.com/LeCoupa/awesome-cheatsheets
 * ******************************************************************************************* */


// 0. Synopsis.
// http://nodejs.org/api/synopsis.html

raecoo

# Access number
cat production.log | grep "^Processing" | wc | awk '{print $1}'

# Each IP access number
cat production.log | grep “^Processing” | awk ‘{print $4}’ | uniq -c 

# Independent IP number
cat production.log | grep "^Processing" | awk '{print $4}' | uniq | wc | awk '{print $1}'
cat production.log | grep “^Processing” | awk ‘{print $4}’ | uniq | wc -l 

paskal

# read more at https://terrty.net/2014/ssl-tls-in-nginx/
# latest version on https://gist.github.com/paskal/628882bee1948ef126dd/126e4d1daeb5244aacbbd847c5247c2e293f6adf
# security test score: https://www.ssllabs.com/ssltest/analyze.html?d=terrty.net
# your nginx version might not have all directives included, test this configuration before using in production against your nginx:
# $ nginx -c /etc/nginx/nginx.conf -t

server {
        # public key, contains your public key and class 1 certificate, to create:
        # (example for startssl)
        # $ (cat example.com.pem & wget -O - https://www.startssl.com/certs/class1/sha2/pem/sub.class1.server.sha2.ca.pem) | tee -a /etc/nginx/ssl/domain.pem > /dev/null

JoshCheek

A small clone of Sinatra

For the purpose of learning.

Run the example app

davetoxa

Замечали ли вы, что когда вы набираете что-то в google или yandex с ошибками, вас поправляют?

Возможно вы искали ... ?

Данная концепция называется триграммным поиском, она позволяет искать слова и фразы с опечатками.

Как это работает?

Каждое слово делится на сочетания из 3х букв – триграммы. На примере слова "Россия", будет: