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There are two major flavours of variables in GNU Make:  "simple" and "recursive".  While simple variables are quite simple and easy to understand, they can be limiting at times.  On the other hand, recursive variables are powerful yet tricky. Basics Let's review the definition of the two flavours. Simple variable The value of a simple variable is computed exactly once no matter how many times it is expanded.  More importantly, the value is computed when the variable is defined and not when it is used.   For example in the snippet below, the value of a-simple-var is computed only on line #1 and is simply reused on lines #4 and #5.  a-simple-var := ... target1 : echo $(a-simple-var) echo $(a-simple-var) Recursive variable The value of a recursive variable is computed every time it is expanded .  Unlike a simple variable, the value is not computed when the variable is defined. ...

Have you ever been in a situation where you'd needed to work on different/new machines on a daily basis and wished there was a way to have all your essential Firefox configurations/addons/bookmarks on those machines without connecting your precious Firefix Sync account with all those stored passwords and credit cards? Well, I was there a few years ago and I found Firefox profiles to be an easy and clean way of achieving what I needed. The gist of the idea is that, you create and configure a "perfect" profile and make a copy of it on a flash drive (or Google Drive?).  Then copy that profile settings to new machines and, well, benefit! Here's the more detailed procedure with a few screenshots (using Windows 10 in VirtualBox running on openSUSE Tumbleweed.) Create the Perfect profile 1) Launch Firefox with Profile Manager using the command firefox -P either in your Linux terminal or in Windows Run dialog.   2) Then create a new profile (I named it "Perfect"...