Monthly Archives: February 2013

It is relatively easy to boot GNU/Linux from GRUB, because it somewhat resembles to boot a Multiboot-compliant OS. Set GRUB’s root device to the same drive as GNU/Linux’s. The command search –set=root –file /vmlinuz or similar may help you (see … Continue reading →

http://www.codinghorror.com/blog/2007/10/a-visual-explanation-of-sql-joins.html rpm -V output: S file Size differs M Mode differs (includes permissions and file type) 5 MD5 sum differs D Device major/minor number mismatch L readLink(2) path mismatch U User ownership differs G Group ownership differs T mTime differs

Best practice from my experience when it comes to WordPress and permissions is: • Owner: SFTP/site user • Group: apache • Directory Permissions: 02775 (drwxrwsr-x) • File Permissions: 0664 (-rw-rw-r–) • Directory ACLs: default:user:siteUser:rwx, default:user:apache:rwx, user:siteUser:rwx, user:apache:rwx • File ACLs: … Continue reading →

Disabling w3 total cache: edit the wp-config.php file define (WP_CACHE’, true); from true to false (i.e. define (‘WP_CACHE’,false); Command line method of clearing w3 total cache: delete files form the wp-contentw3tc/pgcache/ directory http://www.frandimore.com/blog-setup/how-to-delete-w3-total-cache-properly/

git clone git://github.com/jacobian/openstack.compute cd openstack.compute  python setup.py build  sudo python

ps -ylC apache2 | awk ‘{s+=$8} END {print s/1024/(NR – 1)}’ ps -ylC httpd | awk ‘{s+=$8} END {print s/1024/(NR – 1)}’ To calculate mysql usage: Calculate MySQL Memory Usage – Quick Stored Procedure

curl -D- http://example.com | grep X-Mod-Pagespeed shows all zeros if it isn’t installed if it is installed, % Total % Received % Xferd Average Speed Time Time Time Current Dload Upload Total Spent Left Speed 100 966 0 966 0 … Continue reading →