There is no fast track to gaining experience in Software Development

It’s a common mistake in our industry that people when first starting out believe they can spend [insert any short number of days here, like 30, 60, 100] days learning a programming language and then they’ll be an expert, easily get a job and hit the ground running. The reality is that software development is not something that you can learn over night, it take time, and it takes practice (with regular feedback).

You can learn the basics of programming and a specific language in a few weeks, but to take those basics and use that knowledge to build anything larger than a simple app or contribute within a development team, you’ll rapidly discover how much you actually don’t know.

A career in software development is a continual learning process. As you work with a specific toolset in a specific functional area, you’ll continually come across new things that you haven’t seen before, you’ll see what works and what doesn’t work. You’ll gain experience as you go and become more comfortable applying your skills and experience to solve problems you’ve seen before, and also become more comfortable solving new problems as what you’ve seen before often helps understand a new problem and find an appropriate solution quicker.

When you start a new project or a new job, you’ll often find this whole process repeats, especially if you’re starting with a new framework or toolset that you haven’t used before. And this repeats throughout your career.

It takes time to gain experience, and unfortunately there is no quick or easy shortcut other than hands-on experience, practice, and continual learning.

Creating a single SSL certificate bundle from CA root and intermediate certificates

When you purchase an SSL certificate for a domain, e.g. to secure HTTPS usage with your web server, your certificate download may provide you several files like this:

youdomain.com.crt : this is your domain certificate

Files that look this are the root and intermediate certificates:

USERTrust_RSA_Certification_Authority.crt

Sectigo_RSA_Domain_Validation_Secure_Server_CA.crt

Depending how your SSL vendor supplies these files, the second two files may be provided already bundled in one file or two separate files.

To combine them together into one bundle file, use cat to concat the files:

cat yourdomain_com.crt USERTrustRSAAddTrustCA.crt AddTrustExternalCARoot.crt > domain_com.ca-bundle.crt

Open the file and check that each start and end comment for each cert are on their own line and not on the same line (see here).