Execute rake file in crontab(RVM)

While executing rake in crontab using rvm, needs to load it properly.

For every 1minute.
 */1 * * * * cd /home/user/application_path && /home/user/.rvm/bin/rvm use ruby-1.9.2-p136 rake reminder_email >> /home/user/crontab_errors.txt


For dayily
0 0 * * * cd /home/user/application_path && /home/user/.rvm/bin/rvm use ruby-1.9.2-p136 rake reminder_email >> /home/user/crontab_errors.txt

Paperclip 'identify' command error on ubuntu.

The Paperclip.options[:command_path] setting is for the location of your ImageMagick executables (in this case identify).

Try running which identify and setting the option to be the directory that is returned like identify is hashed (/usr/bin/identify).
If that command doesn't return anything, make sure that ImageMagick is properly installed.

If not installed then run following command and install it.

sudo apt-get install imagemagick
sudo apt-get install libmagickwand-dev
gem install rmagick

Then set Paperclip.options[:command_path] = "/usr/bin" in development.rb file

Problem solved.