RandomStuff | This repository contains various artifacts from a number | Generator Utils library

I would like to match/extract a specific type of URL's from input. I am trying to match extract everything that starts with "https://google.com" and everything after it. For example, if the input was "!command https://google.com/?randomstuff+something=="

Output: https://google.com/?randomstuff+something==

Let's say I have a file in the form:

randomstuff.extension_filename_more_random_stuff.extension

and I want to change the file name to just:

filename.extension

What bash script could I write to rename the file to the format above where the name is in between the first and second underscore and the (unknown) file extension remains the same?

Edit:

Here's an example... I want to change a file called:

myfile.java_HelloWorld_Created_2020-02-25-08-08-17_myfile.java

to:

HelloWorld.java

Another example:

Input:

notes.txt_history_Created_2020-02-25-08-08-17_notes.txt

Desired output:

history.txt

Edit part 2: Here is the code I currently have:

I have two classes in my application code. I divided the application into three files. One the header file 'header.h' , another is a cpp file 'header.cpp' in which all functions used are defined. Finally the main.cpp file that I am compiling using g++ compiler. Following are the contents of all three files.

1) header.h

student here,

just learned about $_GET superglobal and how the programmer has to physically input keys and values in the URL (i.e www.randomStuff.com/otherStuff.php ?x=1&y=2 ) and that the $_GET method 'grabs' this information and stores it in an array..

out of curiosity i wanted to ask professional programmers, in what cases do you do so?

when and why do you need to insert variables in the url and then use $_GET?

apologies in advance if this seams like a stupid question but i was curious about this

cheers for taking time in elucidating me on the matter

I have a large file of user agent strings, and I want to extract one particular section of each request.

For input:

I am using immer to manage my redux state. It has an item which is an array of customers. There is a delete button on my website and on the delete button, I want to delete the item from the array in the list of customers in my state. In this example, I want to delete Id 100

Redux State

As a way to learn java, I attempted to write something simulating a bank(adding or removing numbers). I succeeded in creating a file(if one does not exist already), and then read from it, but when I attempt to write to it, it fails. I started with FileWriter, where it just erased the text in the document(balance.txt). I then tried BufferedWriter, and it wrote to the document, but it was just symbols instead of actual text/numbers. I'm aware that I'm a newbie when it comes to coding, but is there a solution to this? Thank you.

I've looked through some stuff to find out, but nothing proper has been found (or I am a bad searcher though).

Now I'm learning the scanf function from stdio.h header, and they say escape sequences are not recommended here because it 'confuses' the input, but what actually happens? I tested some code out and got results for differens ES:

I've managaed to randomly select a line in a .txt file but I'm not sure how I would go about deleting it/removing it.

This is what I'm using to pick a random line, which works fine: