abhishek77in

Convert video from MP4 format to FLV format

$brew install ffmpeg
$ffmpeg -i input_file.mp4 -f flv output.flv

• ffmpeg - runs the program
• -i input_file.mp4 - input file
• -f flv - force format followed by format
• output.flv - output file

abhishek77in

Creating a patch

git format-patch -1 commit-sha

Applying a patch

git apply PATCH_FILENAME

abhishek77in

set nocompatible                " choose no compatibility with legacy vi
syntax enable
set encoding=utf-8
set showcmd                     " display incomplete commands

"" Whitespace
set nowrap                      " don't wrap lines
set softtabstop=2 shiftwidth=2      " a tab is two spaces (or set this to 4)
set expandtab                   " use spaces, not tabs (optional)
set backspace=indent,eol,start  " backspace through everything in insert mode

abhishek77in

Using ack, xargs and sed in shell -

ack -l old_str | xargs sed -i -e "s/old_str/new_str/g"

Example ack -l excerpt | xargs sed -i -e "s/excerpt/description/g"

Using VIM -
Doing this will be quite complicated in vim as explained by Drew Neil in vimcasts.org

abhishek77in

Create an object ex: obj = String.new

1. obj.methods - List all methods
2. obj.methods.sort - List all methods in sorted order
3. obj.methods.grep(REGEX) - List all methods matching a regular expression
4. obj.methods - Object.methods - List all methods not present in parent object Object
5. obj.respond_to :method_name - Check if object responds to a method

abhishek77in

##Hacker Notes ?

Allow new developers to catch up right things from the start by collaborating on Hacker Notes. Improve Hacker Notes pages by voting on resources or adding new resources. Find, share and learn interesting stuff.

If you own a Github Repository - Add resources to your repository page. Share it with developers, link it to your project README or WIKI.

If you like a HackerNotes page best way to share it is link it to corresponding project WIKI or README.

Eg. https://github.com/etsy/statsd/wiki#blog-posts-and-links

abhishek77in

###General Git
Linux
Zsh
Tmux
Oh My Zsh
###Editors Vim
Emacs
Textmate

abhishek77in

Programming Languages

Ruby
Python
PHP
CoffeeScript

Javascript Frameworks

Node
Jquery
Jquery Mobile

abhishek77in

Restore postgres database from sql file -

psql <databasename> -U <username> < ~/Downloads/<filename>.sql

Find and replace a word in a directory -

find path-to-directory -type f -not -path "./directory/*" -exec sed -i '' 's/old-word/new-word/g' {} \;

To compress directory with Tar -

abhishek77in

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