There are many archive formats: tar, tar.gz, tar.bz2, zip, rar, tar.xz and more. I would like to have a single command that would determine the type of archive I give to it as input and extract the files from it using the respective algorithm. It's tedious to remember so much extract command variants. Is there an utility to do this?
With an  of archive/compression file formats, is there a single free/open-source command line tool to rule them all? Perhaps something with a consistent / unified set of flags? (note my  friendly )  I once run into a set of aliases meant to largely simplify the task of compressing/de-compressing files with bindings to tar and other utils, but I can't find this anymore.  Update: How can I configure something like atool to not use unzip to extract zip files (which apparently can't handle files larger than 4GB) and to use gunzip instead?  $ aunpack large_file.zip error:  Zip file too big (greater than 4294959102 bytes) Archive:  large_file.zip warning [large_file.zip]:  1491344848 extra bytes at beginning or within zipfile   (attempting to process anyway) error [large_file.zip]:  start of central directory not found;   zipfile corrupt.   (please check that you have transferred or created the zipfile in the   appropriate BINARY mode and that you have compiled UnZip properly) aunpack: unzip ...: non-zero return-code
rsync over ssh "error in protocol data stream" (code 12). ssh works I tried:  rsync -v -v -e 'ssh -p YY' ./testfile me@XXXXX:/home   Error Message  opening connection using: ssh -p YY -l me 146.6.84.206 rsync -&gt;-server -vvve.s . /home  [sender] make_file(testfile,*,0) send_file_list done send_files starting server_recv(2) starting pid=17537 rsync: connection unexpectedly closed (9 bytes received so far) [sender] rsync error: error in rsync protocol data stream (code 12) at io.c(600)[sender=3.0.6] _exit_cleanup(code=12, file=io.c, line=600): about to call exit(12)   This works fine:  ssh -p YY me@XXXXX   Which suggests to me the problem is neither that sshd is not running nor that port YY is firewalled. I have checked anyway.  What other problems could there be?  EDIT: The problem seems to have been "self resolving." I could not replicate the following day. I started my local computer up. Perhaps notably I had a different IP address than last time. And now rsync magically works. I'd appreciate guesses as to what it could have been in light of it going away. What is the name of the vertical bar in $(x^2+1)\vert_{x = 4}$ or $\left.\left(\frac{x^3}{3}+x+c\right) \right\vert_0^4$? I've always wanted to know what the name of the vertical bar in these examples was:  $f(x)=(x^2+1)\vert_{x = 4}$ (I know this means evaluate $x$ at $4$) $\int_0^4 (x^2+1) \,dx = \left.\left(\frac{x^3}{3}+x+c\right) \right\vert_0^4$ (and I know this means that you would then evaluate at $x=0$ and $x=4$, then subtract $F(4)-F(0)$ if finding the net signed area)  I know it seems trivial, but it's something I can't really seem to find when I go googling and the question came up in my calc class last night and no one seemed to know. Also, for bonus internets; What is the name of the horizontal bar in $\frac{x^3}{3}$? Is that called an obelus? Vanishing of Taylor series coefficient If I recall it correctly, this book has two main characters, both male, one of them big and well muscled. During the novel, they found evidence that the current human race descends from ancient Martian astronauts who traveled to Earth in prehistory, causing the extinction of prehistoric Earth humans, (which explains the Missing Link in human evolution).  Later in the novel the big guy travels back in time (no idea of how or why) to Prehistory.  And near the end of the book, the other main character, during an archaeological field research, finds remains of a human being who lived thousand of years ago, a human with large bones, and who holds an item that could not be made in that era (a gold plaque? A metal rod?)  That's all I can remember. I know it is not from the ABC, Asimov, Bradbury or Clarke.  Thanks in advance. Is it correct to use Bernoulli's theorem to explain that a disk floats in the air? Should the correct explanation be based on Boyle's law? In this video, a device is introduced from 1 minute to 18 seconds. After entering the air, the disc at the bottom of the device will be suspended in the air. The video explains that this is because of the Bernoulli effect, but I think this explanation is incorrect, because the disc gap, the radial volume is increasing. Therefore, the reason why the disk is suspended is that the air volume becomes larger, so the pressure decreases (according to Boyle's law). If the air moves along the radial direction at a constant speed, the volume of the air must be constantly increasing, right? So the pressure is decreasing, right? I am looking for a way to add some string to the beginning of every line (same string for every line). Not something customizable but rather something that will be easy to remember and available on every POSIX-compliant platform (and every shell as well). Why do professional print houses use gamut-limiting CMYK? I recently had some business cards printed, and was warned to use the CMYK colour space if providing TIF files.  When I tried saving from Paint Shop Pro to a CMYK, of course the colours came out very much duller, so I provided a different file type that preserved my colours using RGB. To my horror, the cards came back nevertheless converted to the CMYK dull shades.    A few months previously I had been in a hurry and had printed my own one-sided quasi business cards using glossy photo paper and a cheap home printer.  This reproduced my desired colours perfectly.  Since the whole point of using professional printers is quality (though I admit bulk as well), why do they not use printers that can cope with the RGB colour range?   FYI: the main colour in question, which I chose very carefully, is a slightly yellow-tinged lawn green, which I understand doesn't feature in the CMYK gamut.  So why use that gamut, and is there anything I can do to overcome this issue and get cards printed in the colour I have chosen? Implementing toString on Java enums What Topology does a Straight Line in the Plane Inherit as a Subspace of $\mathbb{R_l} \times \mathbb{R}$ and of $\mathbb{R_l} \times \mathbb{R_l}$ Given a straight line in the plane, what topology does this straight line inherit as a subspace of $\mathbb{R_l} \times \mathbb{R}$ and as a subspace of $\mathbb{R_l} \times \mathbb{R_l}$, where $\mathbb{R_l}$ is the lower limit topology?  So trying to figure this out definitely made my brain hurt.  I believe that as a subspace of $\mathbb{R_l} \times \mathbb{R}$, all non-vertical straight lines just inherit the lower limit topology $\mathbb{R_l}$, while vertical lines inherit the standard topology on $\mathbb{R}$.  As for $\mathbb{R_l} \times \mathbb{R_l}$, as far as I can tell, the only difference is that now all straight lines, including vertical ones, inherit the lower limit topology.  My reasoning was basically that for $\mathbb{R_l} \times \mathbb{R}$, open sets on the line all have an initial left end point, since the x-coordinate of this left end point is always captured by the open sets [a,b) in $\mathbb{R_l}$, and this in turn drags the y-coordinate of the initial left end point along for the ride (so to speak).  This is true in all but the vertical line case where there is no shift in the horizontal direction and thus the topology is inherited strictly from $\mathbb{R}$.  As for $\mathbb{R_l} \times \mathbb{R_l}$ it's basically the same argument except now the vertical lines inherit from $\mathbb{R_l}$ as well.  Can someone let me know whether I've reasoned correctly?  Thanks. Books on Number Theory for anyone who loves Mathematics?(Beginner to Advanced &amp; just for someone who has a basic grasp of math) I want to simplify the following:  $\sum_{n=0}^x 1 - (1 - I[a \ne 0] * I[a \ge b]) * (1 - I[b \ne 0] * I[b \ge c]) * (1 - I[c \ne 0] * I[c \ge d]) * (1 - I[d = 0])$ I am writing my thesis and using latex for first time. I would like to modify the the first page of my thesis, as it shows only name of thesis, my name etc. I would like to move all  text little-bit to right-side, just on the first page, without effecting the other pages of thesis. Any idea how can I do it?  \documentclass[a4paper,      12pt,      twoside,      openright,      cleardoublepage=empty,      numbers=noenddot,      appendixprefix,      BCOR1.5cm,      bibliography=totoc      ]{scrbook}   \thispagestyle{empty} \begin{titlepage} \begin{center}  %xyz  \end{center} \end{titlepage} \clearpage Why don't we have a theory of everything? What is currently stopping us from having a theory of everything? i.e. what mathematical barriers, or others, are stopping us from unifying GR and QM? I have read that string theory is a means to unify both, so in this case, is it a lack of evidence stopping us, but is the theory mathematically sound? Extending an enum via inheritance I know this rather goes against the idea of enums, but is it possible to extend enums in C#/Java?  I mean "extend" in both the sense of adding new values to an enum, but also in the OO sense of inheriting from an existing enum.    I assume it's not possible in Java, as it only got them fairly recently (Java 5?).  C# seems more forgiving of people that want to do crazy things, though, so I thought it might be possible some way.  Presumably it could be hacked up via reflection (not that you'd every actually use that method)?  I'm not necessarily interested in implementing any given method, it just provoked my curiosity when it occurred to me :-) Let f be an r-cycle in $S_n$. Given any $h \in S_n$, show that $hfh^{-1} = (h(x_1), h(x_2), \dots, h(x_r))$ Is it possible to sneak up on a Force user? In Return of the Jedi, Luke and Darth Vader both sense each other's presence on the moon. In The Force Awakens, Kylo Ren   senses Han Solo on the Starkiller Base  Is it possible to sneak up on a powerful Force user? Or do you have to be   related to them  or significant to them in some way to be detected? Are there any examples of a Force user not sensing someone (in canon), or any successful attempt at disguising someone from a Force user? To clarify, I am talking about physical presence, not Force ability.   Han Solo doesn't have the Force, but Kylo sensed him anyways How can I encrypt and decrypt a string in C#? Does walking fast prevent eggs hatching? I have a couple of eggs that I've picked up from some Pokestops (I'm lucky enough to live above one).   I walk a lot. I get to work through a 2 mile walk / train journey every day, so I should be picking up loads of steps for the eggs I have. However, because I'm normally always running late... for everything, I have to rush everywhere, so I walk at an above average pace.   Today I've walked around 5 miles, but the game has registered 100 metres. Is this because I walk too fast, or because of something else?  It's worth pointing out that I have the app open when walking... mostly because I have to catch them all. (This made me miss a train this morning... luckily I was early :D) Which view is the "Current view"? I have got a SharePoint 2010 website with a WebPart-page and a few WebParts on it.  One of the WebParts displays a list/a view of a list.  The views of that list have been updated due to business needs - but the view in the WebPart on the WebPart-page is not updated.    If I edit "Modify Shared Web Part" (the one with the list / list view),  the "Selected view" is set to "&lt;Current view&gt;".  My question is now: Which view of the list is the "&lt;Current view&gt;"? Is it any view of the list at all - or has the WebPart some kind of its own view to that list? This is basically the same as  for the Android app, except I am making the request for the iOS app.  When viewing a question in the iOS app, I'd like to see the total number of views for the question.