I couldn't successfully execute a simple iptables command and got this error on an Ubuntu server:

# /sbin/iptables -I INPUT ....
iptables: No chain/target/match by that name

The cause was that two modules weren't loaded: `xt_multipor...

Google Calendar integration into Thunderbird suddenly did not work any more for me. Thunderbird kept asking me for my password to access calendars, but did not show them when given the correct credentials. Instead, calendars in the list got the fa...

With "attaching an event handler once" you possibly mean one of these two things:

Register a function for an event, and discard it once that event has happened

Use one instead of on.

$(element).one('eventName', function() { ... });

...

Understanding your type of cronjob

Some cronjobs must only run on a single server. E.g. when you run nightly batch operations on the database, it should probably run on a single server. Running it on multip...

Webpack is the future. We're using it in our latest Rails applications.

For tests, we want to compile assets like for production.
For parallel tests, we want to avoid 8 workers compiling the same files at the same time.
When assets did not change...

We had a card that described how to install multiple mysql versions using mysql-sandbox. Nowadays with the wide adoption of docker it might be easier to u...