Original answer For Python 2 on Ubuntu 11.10, using upstart, install the python plugin for uWSGI with apt-get install uwsgi-plugin-python and if you’re using an ini file to configure your uWSGI app, then add plugins = python to the [uwsgi] section and it should solve this problem. Edit: Updated for Python 3 and Ubuntu 17.10 … Read more
On Ubuntu 18.04: sudo systemctl restart postgresql.service
You’ll need to install numpy, scipy and matplotlib to get pylab. In ubuntu you can install them with this command: sudo apt-get install python-numpy python-scipy python-matplotlib If you installed python from source you will need to install these packages through pip. Note that you may have to install other dependencies to do this, as well … Read more
The solution to the bad thread wake up performance problem in recent kernels has to do with the switch to the intel_idle cpuidle driver from acpi_idle, the driver used in older kernels. Sadly, the intel_idle driver ignores the user’s BIOS configuration for the C-states and dances to its own tune. In other words, even if … Read more
WTF?! My cronjob doesn’t run?! Here’s a checklist guide to debug not running cronjobs: Is the Cron daemon running? Run ps ax | grep cron and look for cron. Debian: service cron start or service cron restart Is cron working? * * * * * /bin/echo “cron works” >> /tmp/file Syntax correct? See below. You … Read more
On my distro “locale-gen” was not installed and it turned out all I had to do is set the LC_ALL environment variable. so the following command fixed it: export LC_ALL=”en_US.UTF-8″ hopefully it will help someone else…
Updated answer (Jan 2020) xargs is now the recommended tool to achieve parallel execution. It’s pre-installed almost everywhere. For running multiple rsync tasks the command would be: ls /srv/mail | xargs -n1 -P4 -I% rsync -Pa % myserver.com:/srv/mail/ This will list all folders in /srv/mail, pipe them to xargs, which will read them one-by-one and … Read more
You will get this exception, if you use the JUnit 4.4 core runner to execute a class that has no “@Test” method. Kindly consult the link for more info. courtesy vipin8169
This will happen if you haven’t loaded the time zone table into mysql. mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root -p mysql mysql is the name of the built-in database that holds MySQL-specific configuration data.
The difference is that virtual sites listed in the sites-enabled directory are served by Apache. In the sites-available directory there are the virtual sites that exist on your server, but people can’t access them because they are not enabled yet. sites-available: this directory has configuration files for Apache 2 Virtual Hosts. Virtual Hosts allow Apache 2 to … Read more