Month: October 2011

RailsFTW v0.9 released, now with Rails 3.1

Rails FTW

Thanks to a Battlefield 3 Beta losing streak that I blame on my sucky internet connection, I’ve decided to update my hack-job of a standalone Windows installer for Rails.

Now there are two separate installers, a Ruby 1.8.7 + Rails 3.0.10 installer and a Ruby 1.9.2 + Rails 3.1.0. Here’s a table to give a quick comparison between these two installers with RailsInstaller thrown into the mix:

  RailsInstaller 2 RailsFTW (Rails 3.1) RailsFTW (Rails 3.0)
Ruby version 1.9.2-p290 1.8.7-p352
Rails version 3.1.0 3.0.10
File Size ~55MB ~20MB ~10MB
DB Adapter Gems sqlite3, pg, tiny_tds (MS SQL Server) sqlite3, mysql2
Additional Features git, DevKit –
Internet Connection Required? Yes No (Bundler will fail to connect to server but new apps will still work) No
Compiled by Some of the biggest names in the Ruby community Some random third world developer. LOL

Take periodic screenshots in Ubuntu with scrot and cron

I had to log my hourly effort in my last gig (stupid policy IMO; what am I, a factory worker?) but since I’m not working on Windows, I couldn’t use ManicTime to do the tracking for me.

Taking a cue from oDesk, I decided to make a simple script that takes screenshots of my desktop every few minutes so that I could just review them at the end of the day. For this I used scrot for taking the screenshots and cron for the scheduling.

First install scrot:

$ sudo apt-get install scrot

Then write a script, say /path/to/home/scrot.sh:

#!/bin/sh
LOCATION="$(date +/path/to/home/Pictures/shots/%Y/%m/%d)"
mkdir -p $LOCATION
cd $LOCATION
DISPLAY=:0 scrot '%Y-%m-%d-%H%M.jpg' -q 20

This script will take a low quality screenshot of the desktop and put it in the Pictures/shots folder separated by date.

Set the permissions with chmod:

$ chmod u+x /path/to/home/scrot.sh

You can now test this by running:

$ /path/to/home/scrot.sh

Now time to add the script as a cron job. There are a lot of cron tutorials out there, but to summarize what you need to do, here are the basic steps:

Run crontab -e to edit the cron table file for your current user.

Add a line that will execute scrot.sh whenever you want it to run. For example, here’s the entry for running the script every three minutes on Monday to Friday:

*/3 * * * 1-5 /path/to/home/scrot.sh