Why are there not generic phone OS installers?
Why is it that Android still can't be installed as regular OS?
Is there a way to ignore flow errors? I have an auto launched flow that I would like to just ignore the errors of if they occur. I currently have several fault connectors going to a dummy assignment. However I keep receiving error emails which is what I am trying to avoid. Using a Single system() Call to Execute Multiple Commands in C In an information security lab I'm working on, I've been tasked with executing multiple commands with a single call to "system()" (written in C, running on Fedora).  What is the syntax that will allow me to execute more than command through system()?  (The idea being you could execute arbitrary commands through a program running on a remote computer, if the program interacts with the OS through the system() call.)  I.e.:  char command[] = "????? \r\n";  system(command); Submitting a URL to Google using PHP/cUrl Assume $x \in \mathbb{R}$ and $(x + \frac{1}{x}) \in \mathbb{Z}$.   Use Induction to prove that for all $n \in \mathbb{N},~ (x^n + \frac{1}{x^n}) \in \mathbb{Z}$.  I'm not sure how to use the information given to prove the induction step. What I have so far is.  $P(n) : (x^n + \frac{1}{x^n}) \in \mathbb{Z}$  Base Case Then $(x^0 + \frac{1}{x^0}) = 2 \in \mathbb{Z}$  Induction Hypothesis: $x^k + \frac{1}{x^k}\in \mathbb{Z}$  Want to prove: $x^{k+1} + \frac{1}{x^{k+1}} \in \mathbb{Z}$  My first step was  $x^{k+1} + \frac{1}{x^{k+1}} = x \cdot x^k + \frac{1}{x} \cdot \frac{1}{x^k}$ How to get only filename using sed How can I get only the filename using sed? I've this  out_file=$(echo $in_file|sed "s/\(.*\.\).*/\1mp4/g")   But I get the path too /root/video.mp4, and I want only video.mp4. What happens when you target a "magical effect" with Dispel Magic? Where can I find Vagrant packages? is a tool to build and manage virtual machines for developers.  It has a  guide that contains iffy-looking suggestions like  $ sudo ln -s /usr/bin/ruby1.8 /usr/bin/ruby  # wtf???   or installing RubyGems from source rather than from Ubuntu packages, and then using gem install to install vagrant itself.  I'm not feeling comfortable just following those instructions.  Is there perhaps a PPA?  Are there, perhaps, alternative tools that are packaged for Ubuntu? Nested indenting issue How to get correct indentation after entering a nested list? I am writing a code review and I could not figure this out by googling. Here is an example of the three formatting styles I tried to use (but none of them works as I would like):  Case 1  The task is to align the last line (see below) "In the first line you use camelCase..." with the last line above the numbered list. In my first attempt, I added a new line (empty line) after the second numbered list item, and then indented by 4 spaces:     Variable name casing: See  on "Snake Case". In Perl, we use "snake_case" instead of "camelCase", and be consistent. Example:   Line 14: my $testType  Line 18: my $right_frame   In the first line you use camelCase, whereas in the second you use     snake_case.     As you can see, this gives the correct indentation but it introduces a blank line above the first numbered item.  Case 2  In this case I do not add the blank line after the second numbered list item ( but still indent by 4 spaces ):     Variable name casing: See  on "Snake Case". In Perl, we use "snake_case" instead of "camelCase", and be consistent. Example:   Line 14: my $testType  Line 18: my $right_frame In the first line you use camelCase, whereas in the second you use     snake_case.      In this case the line is considered as part of the last list item  Case 3  In this case, I try to add two blank spaces (invisible) at the end of the second list item:     Variable name casing: See  on "Snake Case". In Perl, we use "snake_case" instead of "camelCase", and be consistent. Example:   Line 14: my $testType  Line 18: my $right_frame In the first line you use camelCase, whereas in the second you use     snake_case.      In this case the line is considered part of the second item, and hence not correctly indented.  How to achieve the correct indentation? Prove $(a^2+b^2)(c^2+d^2)\ge (ac+bd)^2$ for all $a,b,c,d\in\mathbb{R}$. Is it possible to pass properties as "out" or "ref" parameters? Can I pass a property as an "out" or "ref" parameter if not then why not?   e.g.  Person p = new Person();    . . .  public void Test(out p.Name); Activity restart on rotation Android How can I stop Lollipop ignoring my wifi network? Android 5.0 has a new "feature": If a wifi network has no connection to the internet, it will remain connected to it but route traffic over mobile data instead. A small exclamation mark shows in the status bar over the wifi symbol.  Unfortunately, for some reason Android has decided that my home wifi does not have a good internet connection - which is not true, as I'm using it to access Stackexchange at the moment - and is, instead, trying to send everything over GPRS.  With mobile data disabled, things work over wifi just fine, despite the exclamation mark - so it isn't a problem with the wifi not working, per se.  Is there any way to override this "smart" feature? The only way I have found to make things work at the moment is to disable mobile data while I am in my house - which is not a practical long-term solution.   EDITING to add that I have now solved this problem by buying a new router! I was using something very old... But, I'll leave the question here for the benefit of anybody else with the same difficulty. Is there a command like head but for line truncation? Relationship between complex number and vectors Calculate distance between two latitude-longitude points? (Haversine formula) How do I calculate the distance between two points specified by latitude and longitude?  For clarification, I'd like the distance in kilometers; the points use the WGS84 system and I'd like to understand the relative accuracies of the approaches available. Is it safe to have laptop turned on 24/7? I read this book series in middle school. I believe that it would be classified as young adult fiction/fantasy. A girl has magical powers, and with her growing powers comes runes/tattoos in her arms. This is shown on every book cover. I know that one cover is blue. This one shows the girl in a black tank top and black pants. One is a yellow cover, with her in a dress (I think).  The girl has a friend/mentor, who she develops feelings for. The girl is the key to stopping a war between multiple factions/people. Each side is trying to use her to their advantage. I think the series was written in the early 2000s. The word that always gets me mixed up : JUST I had just arrived at the hotel, checked in and gotten into my room. Just as I was about to unpack, I noticed that one of my bags was missing. At first I thought I had left it back at the airport, but it turned out that I had left it on the taxi.  Here, what's the meaning and role of "just"?  Why do you guys input the word "just" here?  What exactly does the word do grammatically?   Could you help me? Official reasons for "Software caused connection abort: socket write error" I did not know that you could find an answer for that. However, I can only use Excel so far to do it.  How to calculate 3.6! by hand?