I have a good use for the double braces expansion: Java projects built with Maven normally have the directory structure generated by the following command: mkdir -p src/{main,test}/{java,resources}. I learned this trick with this video, thanks!
learning python at the same time as this. The echo command makes alot more sense with the help of this video because it reminds me of how in python you would have a set variable value and then you would use the print function or in this case echo and it would print the value of the variable rather than the name of the variable itself unless you wanted it to in which case you would leave it just naked in double quotes etc. im rambling lmao Thanks!!