explicit update SASS in Rails Application

Sass (Syntactically Awesome StyleSheets)?
Available @ http://sass-lang.com/
Is a fine way to produce clean and easy CSS code using a meta-scripting-language. It has feature for developer ease like variables, nesting, mixins, and selector inheritance.

If you are somehow using Sass in your Ruby-On-Rails application and using the default Webrick to serve the web content, it automatically updates the "public/stylesheets/*.css" files from your styling meta-script in "public/stylesheets/sass/*.css".

But, if you are using any other web-server (like, thin)..... in that case you'll have to get your CSS files to be explicitly updated using 'sass --update' action.

$ bundle exec sass --update 
--watch public/stylesheets/sass:public/stylesheets


So, include it in your deploy Rake Tasks and get updated stylesheets everytime without fail.

mysql-server retained old credentials, got work-around but no solution

While trying re-configuration of an existing  mysql-server over CentOS, tried 'yum remove' the mysql-server and then again 'yum install' it.

When I tried setting up a new password for 'root' using 'mysqladmin', it raised an error. Some random troubleshooting showed it still had earlier-installation's root credential working for it.

Trying some more stuff, I manually set 'old_password=0' in '/etc/my.cnf' and then tried re-installing. It still had the earlier password working for it.

For time being, got a work-around fixing the problem... 

$ yum erase mysql mysql-server
$ rm -rf /var/lib/mysql
$ yum install mysql mysql-server
$ service mysqld restart 

The location of user's information i.e. the user table data resides in '/var/lib/mysql/mysql/user.MDY'; but just removing that only file wouldn't work because it don't get recreated on re-installation if entire directory structure is present.

A service restart is required to create a vanilla copy of '/var/lib/mysql'. 

Still... the issue exists of why to do it manually.

The incidence is under discussion at the link below. If you have a non-hackish solution for the problem or could spot the actual mistake, please reply there.

http://stackoverflow.com/questions/6606869/mysql-retains-password-of-earlier-installation-even-after-proper-yum-remove