Archive | May 2012
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you can decompress in one fell swoop by using tar -xzvf file.tar.gz and compress similarly using tar -czvf file.tar.gz filedir/* file1 file2
we can check the size of a folder in linux by typing command du -hs /path/to/folder
Yesterday i dealing with the problem that i want to start delayed_job in rails after each system reboot. after finding for a while i find that we can set a “cron job” which will execute after each rebbot by just wrting following command : first type crontab -e that will open an cron editor and […]
When i try to restart the apache i get an error : (98)Address already in use: make_sock: could not bind to address 0.0.0.0:80 After spending much time i get a solution as : i type sudo netstat -ltnp | grep ‘:80’ (it is important to note that apache was hanging and it did not matter […]
We can check log of application on heroku just by typing “heroku logs –source app” and “heroku run console” to access rails console from heroku.
To drop a database in heroku just type heroku pg:reset SHARED_DATABASE