changing Apache2 web directory. 403 forbidden
How to redirect apache /var/www to the home directory and access all the directories and files in my home directory?
Let $f$ be entire and suppose that $\text{Im} f\ge0$. Show that $\text{Im} f$ is constant. How do you show that if $f$ is entire and if $\text{Im} f\ge0$, then $\text{Im} f$ is constant? Is this even true in the first place? Can a quasiclassical electron wave packet in elliptic orbit be formed from bound hydrogen-like eigenstates? Position probability densities of eigenstates of hydrogen-like systems have axial symmetry, so that the wavefunction too much resembles the circular orbits in Bohr's model. I'd like to have a demonstration of correspondence principle, where an electron would be localized to look somewhat like a classical particle, and move in an elliptic (non-circular) orbit around a nucleus.  It seems though that if we try to make a wave packet too localized, then it'll disintegrate (get scattered by the nucleus) too fast to see anything resembling an elliptic orbit. OTOH, if we take it too spread out, it'll have to be quite far from the nucleus so as to avoid hitting it, and thus it'll have high total energy, which may appear to be above ionization threshold (at least partially), after which it'd be quite hard to analytically calculate evolution of the wave packet.  Thus my question is: is it possible to form a more or less localized wave packet, which would (on average) move in an obviously-elliptic orbit (major/minor axes ratio of 4:3 or higher), and only require bound states to fully represent it? If yes, then what properties (FWHM, apocenter, angular momentum etc.) should it have for this to be possible? Today I gave a .  This results of course in a negative score for today.   Since then I don't get any more notifications for new rep in the new top-bar on meta.    Only after resetting the rep indicator by clicking on it I get new notifications. What uses are there for "placement new"? Has anyone here ever used C++'s "placement new"? If so, what for? It looks to me like it would only be useful on memory-mapped hardware. The bug displayed in the attached screenshot occurs consistently for me while running the developer beta of iOS 10 using v1.5.2 of the Stack Exchange app on an iPhone 6.  I was able to recreate this by simply tapping on any question or answer in my feed with a long title. This doesn't appear to be a bug with iOS 10 itself since I haven't seen it in other apps, but I could be wrong. The unique style of the diagrams at  has an informative but nice hand-drawn touch. I guess they are actually drawn by hand but just recently on our partner site for Mathematica someone asked how to draw a similar diagram such as this one with Mathematica's plot functions ().    Now without Mathematica this should be possible as well but I have a hard time getting the details right. Can such a diagram be created in TeX with a similar design? My first attempt does not look particularly great but here it is (the font is from ):      \documentclass{standalone}     \usepackage{tikz,color}     \usepackage{pgfplots}     \usepackage{fontspec}     \setmainfont{Humor-Sans}      \begin{document}     \begin{tikzpicture}     \pgfplotsset{every axis/.append style={line width=1pt}}      \begin{axis}[%         axis x line=bottom,         axis y line=left,         xtick={1.2, 2.9, 4.5},         xticklabels={-3 days, -1 day, 5 minutes},         yticklabels={}     ]     % 1st plot     \addplot [cyan!80!white, samples=200, domain=0:6] {0.05*rnd+3+(sin(deg(x))^2)/sqrt(x)*exp(-(x-2))};     % white background for 2nd plot     \addplot [white, samples=200, domain=0:6,line width=4pt] {0.05*rnd+0.4*x+2+x^2*sin(deg(x))^2*exp(-x)};      % 2nd plot     \addplot [red!80!white, samples=200, domain=0:6] {0.05*rnd+0.4*x+2+x^2*sin(deg(x))^2*exp(-x)};      \end{axis}       \node at (2.7,4.6) {downhill};     \draw  plot[smooth, tension=.7,line width=2pt] coordinates {(1.2679,5.5206) (1.9454,5.493) (2.4017,4.9261)};      \end{tikzpicture}      \end{document} It seems Microsoft has tried to solve this problem .  In Windows 7, there is no boundary between monitors and the mouse can move freely across the top of the screen between my 3 monitors, provided I had set their heights equal in display settings. Windows 8 introduced sticky corners. See .  Windows 10 got sticky corners as well. There are a few pixels at the top corners of each display where the mouse cannot cross over onto the other display. One must move the cursor down to avoid this region in order to get to the next display.  The image shows roughly the region where mouse movement is not permitted in Windows 10, but is allowed in Windows 7.    Personally, I had no problem with unrestricted mouse movement across the top of my screens - I got used to "aiming" for the x, and the convenience of unrestricted cursor movement. Like all the people who wanted to disable it in W8, I'm wondering if there is a way to disable it in W10.  Edit to address possible duplicate:  Although the problem is identical to the one in , solutions to solve the problem in W8 involving editing the registry key MouseCornerClipLength do not work in W10, since that registry key is not present in W10. Also adding that key and setting the value doesn't work. I searched the entire registry and couldn't find it in another location. No other W10 keys in the node referenced in the W8 solution are obvious replacements.  Edit to address possible solutions in comments  harrymc's  and  that worked for for Windows 8.1 do not work in Windows 10. Access .mat file containing matlab classes in python Notation problem in integration: write $dx$ or ${\mathrm{d}}x$? Spam iCloud Calendar Invitations I am working on an iGoogle-like application. Content from other applications (on other domains) is shown using iframes.   How do I resize the iframes to fit the height of the iframes' content?  I've tried to decipher the javascript Google uses but it's obfuscated, and searching the web has been fruitless so far.  Update: Please note that content is loaded from other domains, so the  applies. I setup my Nginx conf as per  , and now http2 is available...  But in Chrome (Version 54.0.2840.98 (64-bit))  Dev tool, it's always on HTTP 1/1 :  NAME             METHOD  STATUS  PROTOCOL shell.js?v=xx..    GET    200     http/1.1   my server is running Ubuntu 16.04 LTS which supports both ALPN &amp; NPN , and the openssl version shipped with it is 1.0.2g  I checked http2 support with and the result is :    Yeah! example.com supports HTTP/2.0. ALPN supported...   Also checking with curl is OK   $ curl -I --http2 https://www.example.com   HTTP/2 200    server: nginx/1.10.0 (Ubuntu)   date: Tue, 13 Dec 2016 15:59:13 GMT   content-type: text/html; charset=utf-8   content-length: 5603   x-powered-by: Express   cache-control: public, max-age=0   etag: W/"15e3-EUyjnNnyevoQO+tRlVVZxg"   vary: Accept-Encoding   strict-transport-security: max-age=63072000; includeSubdomains   x-frame-options: DENY   x-content-type-options: nosniff   I also checked with is-http2 cli from my console  is-http2 www.amazon.com × HTTP/2 not supported by www.amazon.com Supported protocols: http/1.1  is-http2 www.example.com ✓ HTTP/2  supported by www.example.com Supported protocols: h2 http/1.1   tested with openssl from my localhost  $ echo | openssl s_client -alpn h2 -connect www.example.com:443 | grep ALPN  depth=2 O = Digital Signature Trust Co., CN = DST Root CA X3  verify return:1  depth=1 C = US, O = Let's Encrypt, CN = Let's Encrypt Authority X3  verify return:1  depth=0 CN = example.com  verify return:1  ALPN protocol: h2  DONE   why Chrome is left behind it ? How can I check it also with Safari (v 10.0.1) Why does adding a curve modifier move my object to the center of the curve? I'm using a curve modifier and an array modifier. My object is at one end of the curve but as soon as I choose the curve for the curve modifier it moves to the center. How can I fix the problem so that I can have the array going from one end of the curve to the other? How is Selenium RC different from Selenium Web driver and some good pointers for a naive beginner to learn to scripting please? Thanks! How do you switch from Wayland back to Xorg in Ubuntu 17.10? Some of my applications don't work on Ubuntu 17.10 Wayland. How can I switch back to Xorg? How does the EMH hold onto a phaser while having bullets go through him? In the Voyager episode: "Future's End, Part II" the doctor rescues B'elanna and Chakotay.     PORTER: They've got lasers! A black man and some bald guy.  (The EMH   enters. Porter and Butch's bullets go straight through him.)       PORTER: God in heaven help us.       EMH: Divine intervention is unlikely.  (The EMH phaser stuns them,   then unties Torres and Chakotay.)   In an earlier episode of Voyager, "Phage":     PARIS: But a hologram is just a projection of light held in a magnetic   containment field. There's no real matter involved. (The EMH slaps   Paris.)       EMH: Now, you hit me.  (Paris's hand passes through the EMH's head.)       EMH: The magnetic containment field that creates the illusion of my   body can be modulated to allow matter to pass through it or be   stopped. I might be able to modulate the holographic lungs in the same   way, allowing oxygen and carbon dioxide to pass from the lungs to the   blood stream.   In order to make the above adjustments the doctor had to touch several buttons on a control panel. I realize the time I refer to above he was using the holo-emitter instead.    How does it work exactly that the doctor can have bullets pass straight through him but he's able to hold on to a phaser without it falling out of his hand? Can he simultaneously have part of his body be transparent and the rest be more like matter at the same time? What if the bullets hit the hand holding the phaser? I think one had a shotgun as I recall so there probably would have been pellets going all over the place. custom button visibility list view I have addded a custom button to list views in the Contact object. I have multiple list views but I just need to show the custom button in some of the list views and it should be hidden in the remaining lists views.  Is this possible? Thanks! I want to add the Apache user (www-data) to the audio group. I've read the man page for useradd, but I'm not having any luck. I'm running xubuntu 11.10. Here's what I'm doing:  $ sudo useradd -G audio www-data useradd: user 'www-data' already exists   If I leave out the -G option, bash, prints the help info for useradd:  $ sudo useradd  audio www-data Usage: useradd [options] LOGIN Options: -b, --base-dir BASE_DIR       base directory for the home directory...   It's not clear to me from the man page what options I should use to make this work. Understanding slice notation We have an instance of SQL Server 2008 installed on a customer server. The customer's IT department is in charge of the various backups of the machine.  The SQL Server log shows there is a full backup every day at 7 PM but we can't find evidence of any plan scheduled in SQL Server.  The technicians we contacted couldn't tell us if there was some sort of automatic backup, all they told is that the entire machine is being backup up.  Using a script I found in  I found out that the physical device name is a GUID and that this means that this is an external backup process:  USE [msdb] GO  SELECT      [bs].[database_name],      [bs].[backup_start_date],      [bs].[backup_finish_date],      [bs].Server_name,     [bs].user_name AS [BackupCreator] ,     [bmf].physical_device_name FROM msdb..backupset bs   INNER JOIN msdb..backupmediafamily bmf ON [bs].[media_set_id] = [bmf].[media_set_id]  ORDER BY [bs].[backup_start_date] DESC   This is a row from the above query:     db_name 2015-09-16 19:01:23.000   2015-09-16 19:01:28.000SERVER_NAME  NT AUTHORITY\SYSTEM{424F084A-F35D-4A66-8FC7-072268A89A77} 5   Moreover the backup start and finish date spans only for 5 seconds, so I guess it's clear it's not a job of sql server.  This is a line from the log:     2015-09-03 19:02:30.71 Backup   Database backed up.   Database: db_name, creation date(time): 2012/10/12(20:52:11), pages dumped: 3290021,   first LSN: 276028:152755:172, last LSN: 276028:152827:1, number of dump devices: 1,   device information:   (FILE=1, TYPE=VIRTUAL_DEVICE: {'{95380B0A-D50B-408F-B95F-1AB8975BA7F8}5'}).   This is an informational message only. No user action is required.   So, since they can't help us what can I do to track down the process responsible of the backups? We need this because we want to coordinate the backup in an ordered manner, and do the transaction log backups too in order to keep the log at a reasonable size (now we do shrink the log every week, and this is not the good way to go).