Monthly Archives: October 2017

How to generate self-signed X.509 certificates for local development (Nginx)

This days, security and encryption is one of the most important topics and that’s why we need to have certain amount of knowledge about commonly used methods. TLS/SSL works by using a combination of a public certificate and a private … Continue reading

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Gpg – can’t connect to `/home/${USER)/.gnupg/S.gpg-agent’: No such file or directory

Recently, I got below error while I was trying to create new gpg key: can’t connect to `/home/aykut/.gnupg/S.gpg-agent’: No such file or directory gpg-agent[27029]: command get_passphrase failed: Operation cancelled gpg: cancelled by user gpg: Key generation canceled. One can think … Continue reading

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Oracle Null Safe Comparison (Spoiler alert: SYS_OP_MAP_NONNULL)

Even most experienced programmers are caught null comparison trap time to time. Let’s say we have two different customer tables and our business need is to find the customers that has the same first name, middle name and last name … Continue reading

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