Applicable to Ubuntu and post-CentOS operating systems, this method displays all Maildir directories in all /home/ directories together with their size: find /home/ -name Maildir -type d -exec du -hs –summarize –block-size=1M {} \; | awk ‘{if ($1 > 2000) … Read More
Few basic examples to start with, please beware that none of these is absolute, nor the combination of these are. Just adjust the parts that define the string and the pattern and look at the results, then adjust again, and … Read More
Trying to restart Dovecot and getting “Fatal: Dovecot is already running? Socket already exists: /var/run/dovecot/login/login”? Then open a console and end (kill) all processes by running this: for i in `ps aux | grep dovecot | awk ‘{print $2}’` ; … Read More
Think of hooks & actions in WordPress development like of train stations & passengers: at any hook an action can be loaded (add_action) or unloaded (remove_action); and when the control comes, that’s a filter (add_filter). At the end of the … Read More
When it comes to server resources it’s important to pinpoint which process of which user consumes the most CPU or memory at a certain stage. For this, a dynamic list of processes and their used CPU and memory would be … Read More
Well, sometimes we need to quickly find some really big files on disk, regardless of directory, or file system, or name. Like hundreds of megabytes in one single file. These files are not so common on a regular Linux so … Read More
With the permanent increase in mobile devices resolutions it becomes harder to target these based on screen width (there are plenty of 1920 x 1080 devices out there and some tablets go even higher, while there also are a lot … Read More
Importing SQL files in databases while transferring websites from one host to another implies changing at least URL values in the SQL file and sometimes the collation of the tables. The easiest way to do this is using the linux … Read More
Sometimes is necessary to have a shipping method selected in cart page, before proceeding to checkout. This can be achieved using a short jQuery function inserted in head via a php function added in functions.php: // force shipping method in … Read More
Add the following function in functions.php of your active (child?) theme and adjust the category ID numbers: // Hide categories from WordPress category widget function mo_exclude_widget_categories($args){ $exclude = “1,3,4”; // add category IDs here $args[“exclude”] = $exclude; return $args; } … Read More
