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Over the last few years I have applied and interviewed at a number of tech firms such as Google, Yelp, Microsoft, Amazon, Adobe and other big names. I have received offers from Palantir, Workday, Flixbus, etc. In order to be successful during those interviews (but also as an engineer in . . . Read more
Problem statement Given a linked list, determine if it has a cycle in it. Solution For the solution we are going to use a technique known as the two-pointer technique. That is we will involve two pointers: one slow-runner and the other fast-runner. The slow-runner will move forward 1 list . . . Read more
If you get this error while uploading a new theme, your web server is rejecting the upload due to the overall size of the file. WordPress is unfortunately giving you a rather ambiguous message in response. This is not a theme issue or bug. In order to increase your PHP . . . Read more
In this post I have described how to manually renew Let’s Encrypt SSL certificate. Here I describe how to configure a cronjob to automatically renew my certificates when they are about to expire. Setup default AMI editor to nano:
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$ export EDITOR=nano |
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$ crontab -e |
Add the following:
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17 */12 * * * mv /var/www/html/.htaccess /var/www/html/.htaccess_ && /usr/local/letsencrypt/letsencrypt-auto certonly --webroot -w /var/www/html -d lucaslouca.com -d www.lucaslouca.com --config /etc/letsencrypt/config.ini --agree-to --quiet && mv /var/www/html/.htaccess_ /var/www/html/.htaccess && rm -rf /var/www/html/.well-known/ |
The && operator makes sure . . . Read more