Category Archives: Linux

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

Posted on October 21, 2017 by Aykut Akin

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

Posted on October 18, 2017 by Aykut Akin

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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Installation of Oracle SQL Developer to Ubuntu

Posted on July 22, 2017 by Aykut Akin

First of all, you need to install Java in your environment. I will continue with the latest OpenJDK version currently available. Easiest method to install jdk is to write following commands to the terminal: And put below content inside of … Continue reading →

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Getting result from database in shell script

Posted on July 12, 2016 by Aykut Akin

In shell script, there is no standard way of connecting and retrieving result from database. But, for Oracle we can use SQLPlus to connect and run operations on database. I tried my codes on bash for this post and codes … Continue reading →

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