Ever get really confused by the same thing for 10 minutes before realizing “OH I’VE DONE THIS 100 TIMES BEFORE!!!” I hope this note to self will fix it for next time.
Note to self: Before you waste 10 minutes figuring out why a flash[:notice] either a) isn’t working or b) is sticking around for one refresh too long, remember that flash.now works only for the current action and flash[:notice] = ‘forward’ is available for the next action. You know, like a redirect.
Was implementing nested_has_many_through and came across this error:
Cannot dissociate new records through 'Post#post_tags' on '#'. Both records must have an id in order to delete the has_many :through record associating them.
Apparently I needed to use the rails-2.3 branch, which you can install like so:
script/plugin install git://github.com/username/repo.git -r branch_name
Dear WordPress:
Why is there a field in your wp_posts table called guid of type varchar that stores the unique URL for a post? That’s like me hanging a sign on my dog that says “CAT” or painting my rosewill computer red and calling it an “apple.”
Sincerely, E
Gotta love software that’s humble and knows its place. With all these “innovative, industry shaking, market disrupting” social networking web 2.0 iPhone apps out there that are “simple, beautiful, easy-to-use, doesn’t get in the way,” its nice to be reminded by tar that software can be humble.
If you do this, it won’t tar hidden (like .htaccess) files:
tar -cf myfile.tar *
Instead do this:
tar -cf myfile.tar /home/meatloaf/jams
Here’s how to exclude those crazy backups you did:
tar cf sitearchive.tar --exclude=*.sql --exclude=*.gz *
Had to move our 1.5GB SVN repository from one server to another yesterday. Didn’t have enough room to tar, then gzip so I piped:
tar cvf - svn_repository/ | gzip -c > svn.tar.gz
One cool thing about wordpress is that you can get a feed of a specific category by going to /category/category-name/feed or a specific tag by going to /tag/tag-name/feed
require 'open-uri'
require 'hpricot'
doc = Hpricot.parse(open("http://myawesomeblog.com/category/welcome/feed"))
(doc/:item).each do |xml_product|
puts xml_product.search("/title").first.children.first.raw_string
puts xml_product.search("/pubDate").first.children.first.raw_string
end
My hatred of plain FTP is well documented, but I needed change the root directory of a new SFTP user to their home folder (/home/user) so they can’t navigate back to / on the server.
Do your usual create new user stuff:
mkdir /home/steveperry
useradd steveperry
chown root:steveperry /home/steveperry
chmod 755 /home/steveperry
Force the normal login directory just in case:
usermod -d /home/steveperry steveperry
Set the new user a dummy shell (so they don’t have real shell access).
usermod -s /bin/false steveperry
Now, steveperry should have read access to his home directory. Let’s give him a place to upload stuff:
mkdir /home/steveperry/jams
chown steveperry:steveperry /home/steveperry/jams
chmod 755 /home/steveperry/jams
In the file /etc/ssh/sshd_config comment out “Subsystem sftp /usr/lib/openssh/sftp-server” and add “Subsystem sftp internal-sftp”
# Subsystem sftp /usr/lib/openssh/sftp-server
Subsystem sftp internal-sftp
Also in /etc/ssh/sshd_config, add the following lines at the end of the file to force steveperry to be jailed into his home directory.
Match User steveperry
ChrootDirectory /home/steveperry
ForceCommand internal-sftp
Done! Restart the ssh daemon (run this any time you want changes to become effective):
sudo /etc/init.d/ssh restart
(credit, most of this stolen from: http://www.ericstockwell.com/?p=54)
What do the following companies have in common?
Google, worth $170 Billion Apple, worth $180 Billion Facebook, worth anywhere from $6-$15 Billion
THEY ALL DROPPED SUPPORT FOR IE6!
http://googleenterprise.blogspot.com/2010/01/modern-browsers-for-modern-applications.html
