How can I see the size of files and directories in linux?

The du command.

python ssl module is not available

The solution was to install a newer version of openssl and  rebuild python while pointing to the new installation.

Configure option to build python3

Executing the configure option when building python from source

python3: error while loading shared libraries: libpython3.6m.so.1.0: cannot open shared object file: No such file or directory

python3: error while loading shared libraries: libpython3.6m.so.1.0: cannot open shared object file: No such file or directory

setting up ssl on apache webserver

This  tutorial describes how to setup SSL on Apache webserver. The tools needed to set ssl up a linux server are openssl, a user with sudo privileges and apache webserver.

Nodejs or npm behind a corporate firewall

To setup node package manager behind a corporate firewall. Add the following to you .npmrc file. The file is located at  the user's home directory

how to solve javax.net.ssl.ssl.HandShakeException Error

  To solve this error, you would need to download the SSL certificate from the site you are trying to access and import it into you JVM truststore

STEPS TO CONFIGURE MULTIPLE NODES CASSANDRA ON A SINGLE WINDOWS MACHINE

Simple steps to configure cassandra on a single windows machine with multiple nodes.

changing oracle user profile and expired status

I recently had an oracle user(schema) that was created with a profile of 'DEFAULT' which meant the user's password would expire. The user should have been created with a profile that does not expire its password. Well, the password expired and I have to change the password without actually…

Converting a long to a boolean array in Java and Converting a boolean array to a long in java

Converting a long to a boolean array in Java Converting a boolean array to a long in java