Command Line Previous for Gnome Gui I'm pretty new to Linux, but trying to learn. Ive installed Ubuntu 18 as a VM and playing around.  I was wondering, is there a plugin/application/scheme (not sure of proper term) that allows you to preview what linux is doing in the shell when you do things in the GUI?  For those of you familiar with Windows Server environments, im looking for something like the "Preview powershell command" button that is in the bottom of the gui windows.  I feel this would help me a ton on learning commands and seeing what is actually happening in the shell.  For example when i install a program using the 'ubuntu software' repository, and click to install 'terminator' is there something that someone has created that will let me see "sudo apt install terminator" ?  Thanks in advance!
GUI to CLI command translator Is there any application (or sequence of commands) for this function: seeing the result of the actions, while using a GUI interface, being automatically translated into a Terminal (or similar CLI environment) on the same machine.  I saw this in action long years ago in VBA for Applications (for example the Macros in Excel). I wonder if there is same function in Linux.
Having problems with listings and UTF-8. Can it be fixed? Manipulating Partial Derivatives of Inverse Function In lectures we're told:  $$\dfrac {\partial y} {\partial x} = \dfrac 1 {\dfrac {\partial x} {\partial y}}$$  as long as the same variables are being held constant in each partial derivative.  The course is 'applied maths', i.e non-rigorous, so don't confuse me.  But anyway, if we have:  $$\xi = x - y \qquad \eta = x$$  Then $\dfrac {\partial x} {\partial \xi} = 0$ and $\dfrac {\partial \xi} {\partial x} = 1$.  The rule presumably fails because one of the partial derivatives is $0$.  But then isn't this rule useless? Since I cannot use it without checking that the partial derivative isn't in fact $0$, but then I've worked out the partial derivative manually anyway. Value too great for base (error token is "09") Qualcomm Atheros QCA6174 802.11ac Wireless Network Adapter [168c:003e] (rev 32) can't enable wi-fi How do you associate the .exe file extension with a program in Windows? Determine $4$ specific digits in $34!$ Find the values of $a,b,c,d\in\mathbb{N}$ such that      $$ 34!=295232799cd9604140847618609643ab0000000 $$   My Attempt:  The factorial of $34$ contains a $3$, so the RHS must be divisible by  $3$. Similarly, it must be divisible by $7$, $11$, $13$, $19$ etc.  But I do not understand how can I calculate $a,b,c,d$ in this equation. Should you pick a baby up everytime it cries? My husband and i have differing opinions on this. I don't believe in the term 'spoilt'. I would be very happy if my daughter was 'spoilt' in the sense that she expects to be treated with the highest possible respect and love and affection in all her relationships.   Also it would not bother me if she think she is special and unique (that's exactly what I want her to think). Mother's face is a mirror for the baby - through the mother's reactions and attention, the child learns that she is a lovable and valuable human being.   I spend all my time with my baby when she is awake. I play games with her, I smile, and laugh, and I never ever let her cry. I rush to pick her up immediately, even if it's the middle of the night, I force myself to get up, no matter how tired I am (I admit it's hard sometimes, and I do let her cry for 10-20 seconds sometimes, but never more). Recommended shutter speed for action sports? What shutter speed do professional sports photographers typically use for action sports like football and basketball? Getting MAC Address I need a cross platform method of determining the MAC address of a computer at run time.  For windows the 'wmi' module can be used and the only method under Linux I could find was to run ifconfig and run a regex across its output.  I don't like using a package that only works on one OS, and parsing the output of another program doesn't seem very elegant not to mention error prone.   Does anyone know a cross platform method (windows and linux) method to get the MAC address?    If not, does anyone know any more elegant methods then those I listed above? Option to contact moderators Due to some "recent issues", I think the following is necessary:  Users need a way to contact moderators through the StackOverflow website.  This is especially important for suspensions, where there is no way to appeal or discuss the suspension from within SO itself.  Basically, there would be some kind of a box on the user's page that allows them to mention something to the moderators and some way to read the replies. (Or they could just go to the user's email.) File upload to Heroku not working Once a post has been edited, you can go into the revision list, and click "View Source".  If a post has not been edited (and I don't have the edit privilege) is there any way to see the raw Markdown?  The reason I ask I because of  - it's impossible to see the source markdown, and how it's different from the rendered Markdown.  Not exactly a huge issue, just curious! Random test data: How to do it right? Several months ago I started an experiment in test automation. Each test, before it starts, picks up random test data. For instance, when my test requires a user with administration privileges, I draw a random account and then I from a group of admin users for this account I draw a random admin user.  The reason for using random test data was two-fold:    First, when we were using static, i.e., hard-coded test data, sometimes tests started to fail, because test data no longer existed in DB, e.g., a user has been removed from the database (we're having production dump in our test DB, so I guess the user has been deleted in production). When we started to find such users at runtime, the problem disappeared.  Second problem was that it was not really clear why certain test data were used for a certain test. We have inherited tests from the other team and couldn't understand their intentions behind, for instance, using user "xyz@awesome.com". By writing queries to find data, we started to explicitly state what type of test data we want, e.g., that we want a user with administration privileges.   While my approach solved both problems, it introduced also some new issues:   Tests occasionally fail, because they pick up wrong test data. This is because queries are sometimes incorrect. For instance, once a test drawn a random account that had no administrators at all. Good thing about that is that this way I keep learning new things about the system under tests, e.g., that there must be business reasons to have accounts without administrators. Test setup becomes more and more complex, as queries start to grow and thus tests seems now a bit more complex to understand.   I was also hoping to increase coverage and find more bugs by using random test data just like it is done in fuzz testing. Instead, I mostly found bugs in my test and learned how little I know about the system under test. Finally, ROI doesn't seem big. Before the change there was a cost of maintaining static test data (updating test data if they were outdates). Now I have to maintain complex queries when the test takes "wrong" test data and this tends to occur more often than outdating of static test data previously.  I wonder whether using random test data really makes sense and how to do it right? Is it possible to write a label expression in qgis that displays the label at a given coordinate? I am using the QGIS expression builder for the label properties of my data.  Is it possible to put different parts of the label in different coordinates on the map?  For instance I have a linestring and I would like to have "A" displayed in the beginning of the linestring and "B" in the end of it. Compact operators on an infinite dimensional Banach space cannot be surjective I was reading  when I came across  saying something about a particular type of programmer knowing the difference between an int and an Integer in Java/C# (Object-Oriented Programming Languages).  So, what is the difference? Show that if $a \equiv b \pmod n$, $\gcd(a,n)=\gcd(b,n)$ When is a gerund supposed to be preceded by a possessive adjective/determiner? I would like to know how to upgrade from my current version of Ubuntu to the next stable from the Command line interface? Help with this query I have a person table. I also have a car table and books table.  The car and book tables both have a foreign key back to person.  I am trying to count the number of books and cars each person has. I tried:  SELECT      Person.Name,      COUNT(BooK.bookid) books,      COUNT(Car.CarId) cars  FROM Person, Book, Car  WHERE Person.ID = Book.PersonID = Car.PersonID    but I get:  Incorrect syntax near '='