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Why can I not access a file named `-` when quoting? I have a file called -.  I want to display its contents.  One way is to do  cat ./-   since cat - reads from standard input. However, why are cat "-" and cat '-' also interpreted by the shell as cat -? Dollar-cost-averaging interval based on decay of autocorrelation? How to view the output of a running process in another bash session? I have left a script running on a remote machine from when I was locally working at it. I can connect over SSH to the machine as the same user and see the script running in ps.   $ ps aux | grep ipcheck myuser  18386  0.0  0.0  18460  3476 pts/0    S+   Dec14   1:11 /bin/bash ./ipchecker.sh   It is simply outputting to stdout on a local session (I ran ./ipchecker.sh form a local terminal window, no redirection, no use of screen etc).  Is there anyway from an SSH session I can view the output of this running command (without stopping it)?  So far the best I have found is to use strace -p 18386 but I get hordes of text flying up the screen, its far too detailed. I can stop strace and then sift through the output and find the text bring printed to stdout but its very long and confusing, and obviously whilst it's stopped I might miss something. I would like to find a way to see the script output live as if I was working locally.  Can anyone improve on this? The obvious answer is to restart the script with redirection or in a screen session etc, this isn't a mission critical script so I could do that. Rather though, I see this as a fun learning exercise. Functional equations leading to sine and cosine I am running a critical research program on a Windows 7 PC that needs to run uninterrupted for several months. I have had to re-initialize the entire experiment several time due to unexpected restart. Windows Update is disabled, and I have removed automatic updating from all background programs that have an option for it, but I am still getting restarts at random intervals that completely destroy my experiment.   Is there some way to prevent any and all restart requests? Does anyone have a recommendation for a book to use for the self study of real analysis? Several years ago when I completed about half a semester of Real Analysis I, the instructor used "Introduction to Analysis" by Gaughan.   While it's a good book, I'm not sure it's suited for self study by itself.  I know it's a rigorous subject, but I'd like to try and find something that "dumbs down" the material a bit, then between the two books I might be able to make some headway. Putting a piece of code in between two html tags in Solaris On a solaris HTML file, how do I insert between an html tag and head tag? through bash scripting.  I have an html tag that looks like this:  &lt;html xmlns="http://www.w3.org/1999/xhtml" xmlns:arf="http://scap.nist....-format/1.1" lang="en"&gt;   I want to insert a script written in text file, inside this 'SOLARIS' run HTML file, AFTER the long &lt;html....&gt; tag and BEFORE &lt;head&gt; tag, meaning BETWEEN the two tags, How do I do that?  I want to test using the bash commands to do it for one file at a time as well as multiple file in a folder directory. Will I have to use the folder path in my BASH code? Will I have to use FOR loop or interation in my BASH code? What would be the right code. Note: it is SOLARIS run html file not LINUX one. The name of my HTML file is report.usc20.html.  These are the lines of script that I want to use that are in my backbutton_and_scroller_script.txt file:  &lt;div id="button"&gt;&lt;a href="http://.....index.php"&gt;Back To The Hardening Page&lt;/a&gt;&lt;/div&gt; &lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"&gt;&lt;/script&gt; &lt;script type="text/javascript" src="http://arrow.scrolltotop.com/arrow78.js"&gt;&lt;/script&gt; &lt;noscript&gt;Not seeing a &lt;a href="http://www.scrolltotop.com/"&gt;Scroll to Top Button&lt;/a&gt;? Go to our FAQ page for more info.&lt;/noscript&gt; I know there a lot of posts about ram but I'm still confused about it. I'm building a new system and because it was cheaper, I bought a 6GB kit from Corsair. So I'm wondering if I would be better off just using 4GB of it in a dual channel configuration or just add all 6GB (3 DIMMS) in a single channel configuration.   Thanks What is a virtual terminal for? What's with those who ask a question, but don't ever seem to come back to add requested info? On stackoverflow, there seem to be quite a few programmers who ask a question, usually with one line like:  "How do I release memory after memory warning? My app crashes. Thanks and welcome for reply."   And a bunch of us will ask questions like   what platform? give us some more detail about the crash.   Weeks will go by and the original poster never adds any more details.  In the meantime, some respondents go ahead and answer the question thoroughly, covering possible platforms/scenarios, etc.  Of course no answer is ever selected by the OP.  Then the OP shows up again, and asks another question, sometimes its the same question asked differently, sometimes not.    What is going on here?  Do they have one chance every so often to get a query out on the Internet and they get through and they post and then they can't get back?  Or are they forgetful, since they are posting the same question to tens or hundreds of sites?    I'm just curious.  Seems like they shoot themselves in the foot when they have a captive audience waiting for more details of their problem, yet they never provide those details. What determines speciation at a molecular level?  At what point does a scientist determine two lineages are different enough to be considered separate species?  Does it have a margin of error? ListPlot and filling between curves \RequirePackage{filecontents} \begin{filecontents}{\jobname.bib} @article{Arter95,     Author = {David Arter},     Date-Added = {2013-08-11 17:38:06 +0000},     Date-Modified = {2013-09-01 15:13:22 +0000},     Journal = {Journal of Common Market Studies},     Number = {3},     Pages = {361-287},     Title = {The {EU} {Referendum} in {Finland} on 16 October 1994:              {A} Vote for the {West}, not for {Maastricht}},     Volume = {33},     Year = {1995}}  @article{Detlef95,     Author = {Jahn, Detlef; Storsved,Ann-sofie},     Date-Added = {2013-08-11 17:14:34 +0000},     Date-Modified = {2013-08-11 17:16:45 +0000},     Journal = {West European Politics},     Number = {4},     Pages = {18-37},     Title = {Legitimacy through referendum? The nearly successful domino‚Äêstrategy of the Eu‚Äêreferendums in Austria, Finland, Sweden and Norway},     Volume = {18},     Year = {1995}} \end{filecontents} \documentclass{article} \usepackage[ngerman]{babel} \usepackage{natbib} \bibpunct{(}{)}{;}{a}{}{,} \makeatletter \renewcommand\@biblabel[1]{} \makeatother  \begin{document}  \cite{Arter95}  \bibliography{\jobname} \bibliographystyle{plainnat}  \end{document}   Please help. I want the author's name displayed like this "Arter, D." instead of David Arter What is the difference between 32-bit and 64-bit Ubuntu? I've heard the 64-bit platform performs better and can detect more than 4GB of RAM. Also, while some apps haven't ported to 64-bit yet, ia32-libs lets a 64-bit machine run them.  If so, why not promote 64-bit over 32-bit? While CtrlX works fine in vim under windows, CtrlA selects all (duh).  Is there a way to increment a number with a keystroke under windows? My pixel perfect picture gets blurry when compiled in LaTeX I have this picture:  (I have the original in Pixen and could export it to several different formats. I went with PNG though since it's lossless.)  When I open my picture in Preview (OS X) and zoom in, it looks fine. The characters have extremely sharp boarders between them and the background. However, when I put it into my LaTeX document, compile it to a PDF (using TeXShop) and then zoom in, it suddenly have gotten blurry (see screenshot: ).  Minimal working example:  \documentclass[12pt]{article} \usepackage{graphicx} \begin{document} \includegraphics[scale=1]{fig1.png} \end{document}   In the end, I would like to be able to scale the picture freely without there being any blurring at all. Clock time is off on dual boot Dual boot system Windows XP Pro and Ubuntu 12.04.  I have the bios set for the correct time and Ubuntu set for US Eastern time.  Ubuntu will boot up and the time will be off by -4 hours.  If I correct the time in Ubuntu then when I boot up in Windows XP the time will be off by + 4 hours.  This is a fresh install of 12.04. I did not have this problem before reinstalling Ubuntu. So, to explain the title, I'm referring to the necessity of the axiom of choice in the existence of a well ordering on reals, or any uncountable set.  Now, while tweaking some sets, I came across this :  We start with the natural numbers, $N$. We take the power set of the naturals, $P(N)$.  Then we remove all the finite subsets of $N$ from $P(N)$. Let us call this new set $S$. This set is the set of all infinite subsets of $N$.  It is easy to show that $S$ has uncountable cardinality, same as that of real numbers. This is because the removal of finite subsets only removes a countable number of elements. (Haven't posted this deduction, for it is very easy, but I may post it if it is not so evident)  Now, we seek to find an ordering on the set $S$. Every set in this set is an infinite subset of natural numbers, so each of these sets are well ordered by the natural ordering of $N$.  Taking any two sets in $S$, say $A$, and $B$, we seek to order them by checking their elements lexicographically. We compare the first two elements in $A$, and $B$. Let them be $a_1$, and $b_1$ respectively. If $a_1 = b_1$, then we move on to the second elements in the sets, $a_2$, and $b_2$, and so on. If, at any point, $a_n &lt; b_n$, then $A &lt; B$, or if $b_n &lt; a_n$, then $B &lt; A$.  This order seems to be a well ordering of the uncountable infinity of reals. I don't seem to have invoked the axiom of choice anywhere in the construction of this set $S$.  So, why isn't this a well ordering on the uncountable of reals? Run command whenever someone joins a Minecraft server On one of my machines I have a process running called "whoopsie". I'm running 12.04 server and never specifically installed anything with this name.  Google seems to imply that it has something to with error logs but I'm not finding too much information. The fact that I didn't manually install it and the 3 other servers I checked did in fact have no such running process OR executable made me a bit confused.  Does anyone know what the "whoopsie" process is?  Does anyone know what packages might have installed it? The server is quite plain, it has a LAMP stack, Samba and print servers and the Nagios NRPE plugin, nothing more installed, just standing there being a nice backup-server.  Some more info:  $ whoopsie -h Usage:   whoopsie [OPTION...]  Help Options:   -h, --help           Show help options  Application Options:   -f, --foreground     Run in the foreground   and  USER       PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND   whoopsie   913  0.0  0.4  24448  2092 ?        Ssl  May07   0:00 whoopsie   and  $ sudo cat /etc/passwd | grep whoop whoopsie:x:107:118::/nonexistent:/bin/false