Denis Barushev

Reduce PDF File Size

Fri, 01 Nov 2013 23:21:16 +0200

Use the following ghostscript command:

gs -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 \
-dPDFSETTINGS=/screen -dNOPAUSE -dQUIET \
-dBATCH -sOutputFile=output.pdf input.pdf

Source

docopt

Fri, 19 Jul 2013 00:31:49 +0300

docopt:

Command-line interface description language

ImageMagick Mirror Virtual Pixels

Fri, 21 Jun 2013 22:02:49 +0300

It’s very useful for generating image edges that are mirrored around the boundaries of the image:

convert tree.gif -set option:distort:viewport 70x70-19-19 \
  -virtual-pixel Mirror -filter point -distort SRT 0 \
  +repage virtual_mirror.gif

See: http://www.imagemagick.org/Usage/misc/#mirror

-bash: __git_ps1: command not found

Mon, 20 Aug 2012 16:52:00 +0300

If you use homebrew and have updated your git to 1.7.12 you should see this annoying message instead of your beautiful prompt:

-bash: __git_ps1: command not found

To solve the problem just add this line to your ~/.profile ( ~/.bash_profile, ~/.bashrc) before setting PS1:

source /usr/local/share/git-core/contrib/completion/git-prompt.sh

Update: The issue was fixed in the latest version of the git homebrew formula:

brew update
brew uninstall git
brew install git

MySQL's GROUP_CONCAT Function

Mon, 09 Jul 2012 22:28:04 +0300

MySQL's GROUP_CONCAT Function:

This function returns a string result with the concatenated non-NULL values from a group.

RSpec Rails be_a_new matcher

Fri, 30 Dec 2011 17:08:23 +0200

Passes if the object is a Widget and returns true for new_record?:

object.should be_a_new(Widget)

Reset Heroku Database and Reload Seeds

Thu, 17 Mar 2011 23:01:00 +0200

Since heroku rake db:migrate:reset doesn’t work you should run:

heroku pg:reset SHARED_DATABASE --confirm <APP_NAME>
heroku rake db:migrate

Bottom Bars in Cocoa

Wed, 28 Apr 2010 00:00:00 +0300

Bottom Bars in Cocoa

Adding a Titlebar Accessory View to a Window

Wed, 28 Apr 2010 00:00:00 +0300

Adding a Titlebar Accessory View to a Window

Variable argument lists in Cocoa

Sat, 27 Feb 2010 22:46:00 +0200

Variable argument lists in Cocoa

Cocoa Application Startup

Tue, 02 Feb 2010 11:36:01 +0200

Cocoa Application Startup

rake console: a custom irb instance for your ruby gem

Sun, 20 Dec 2009 22:01:06 +0200

rake console: a custom irb instance for your ruby gem

We could not complete your iTunes Store request. An unknown error occured (-50).

Sun, 20 Dec 2009 15:18:02 +0200

We could not complete your iTunes Store request. An unknown error occured (-50).

How to Unpack a Debian Source Package

Tue, 15 Dec 2009 15:30:30 +0200

How to Unpack a Debian Source Package

Versioning HTTP APIs

Sat, 07 Nov 2009 13:57:25 +0200

Versioning HTTP APIs

Visor for OSX

Tue, 25 Aug 2009 17:05:00 +0300

Visor for OSX:

a system-wide terminal accessible via a hot-key

Terminal.app Tab Namer v0.1 Alpha

Wed, 10 Jun 2009 13:53:12 +0300

Terminal.app Tab Namer v0.1 Alpha:

is a SIMBL plugin for Terminal.app on Leopard that lets you name your tabs.

irb readline support on Leopard

Wed, 29 Apr 2009 11:57:30 +0300

irb readline support on Leopard

Feedzirra

Mon, 09 Mar 2009 22:20:00 +0200

Feedzirra:

is a new ruby feed library “built for speed”.

Location of the MySQL Socket File in Different Systems

Mon, 26 Jan 2009 16:42:14 +0200

From #mysql_socket_location:

"/tmp/mysql.sock", # default
"/var/run/mysqld/mysqld.sock", # debian/gentoo
"/var/tmp/mysql.sock", # freebsd
"/var/lib/mysql/mysql.sock", # fedora
"/opt/local/lib/mysql/mysql.sock", # fedora
"/opt/local/var/run/mysqld/mysqld.sock", # mac + darwinports + mysql
"/opt/local/var/run/mysql4/mysqld.sock", # mac + darwinports + mysql4
"/opt/local/var/run/mysql5/mysqld.sock", # mac + darwinports + mysql5
"/opt/lampp/var/mysql/mysql.sock" # xampp for linux