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  • What are some cool git or .gitignore tricks & best practices? [closed]

    - by 01walid
    Git is just awesome and fast VCS, however, knowing better this tool will help you incredibly increase your productivity and save your time. Here we can try to make a collection of tips, tricks and useful links to better take advantage of git, this question can have some more sub-questions, I mean: what are some usefull commands that reverse or rectify commits/adding/removing mistakes? what are .gitignore & Global .gitignore best practices? especially with private/secure files that contains passwords, api keys, local config and so on ... .gitignore first or git add <files> first? what are the advantages/disadvantages of both being the first/last. links to blog post, articles, would be sufficient. I thought every sub-question is not worthy opening a whole post each alone, I think centralizing these tips in one question post would help many people.

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  • Change permission to mount disk at rdesktop

    - by Tal
    I have ubuntu 10.04 and have installed rdesktop 1.7. I have run these commands: sudo umount /media/Tal sudo mount -t ntfs-3g -o uid=1000,gid=1000,umask=0000 /dev/sdb1 /media/Tal rdesktop -0 -r sound:local -f -u administrator -r clipboard:PRIMARYCLIPBOARD -r disk:tal=/media/Tal myip Tal is external hard drive connecting at USB in ntfs file system. I connect to windows 7 I see the hard drive in computer and I can access to files and create new files and folders, But when I try to copy a new file to a folder he show me an error message: You need permission perform this action Your require permission from computer's administrator to make changes to this folder Tal on my computername Disk from Remote Desktop Connection. I try chmod and chown too but I read I linux forum when it ntfs is no use. Some one can help me with my problem?

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  • Turn your laptop into a wireless Access Point with Windows 7!

    - by David Nudelman
    Windows 7 offers a very cool feature where you can connect multiple devices to any wired and wireless network connection (hotel, cable, 3G, UMTS, EDGE, WIFI, RJ45, Ethernet, etc.) by turning your own laptop into a wireless AP (Access Point) to relay those devices not directly connected to the internet. For this just enter these two commands to an elevated (right click on CMD.EXE, run as administrator): netsh wlan set hostednetwork mode=allow ssid=YOURFRIENDLYSSID key=SOMEPASSWORD netsh wlan start hostednetwork At this point, if Internet Connection Sharing (ICS) is setup, anyone can connect to your SoftAP (if they know the PWD of course) and the traffic will be sent through whatever adapter you want. You can actually bridge it across an entirely different adapter... or the same on a different Wifi LAN. A GUI to set this up can be downloaded for free here: http://www.connectify.me/

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  • How to Get Myself Up to Speed in Building a Java Web App

    - by Damian Wells
    I'm a new developer at a fairly large company and I'm working on a Java Web Application with a senior developer there. The Web App is built on top of an IBM stack (RAD, DB2, WebSphere) and basically uses JSPs and Servlets. The Web App is an internal tool to be used by employees to manage data coming from Excel files. So, there are lots of database interaction going around like SQL commands. My question is: I don't know much about JavaEE as a whole and only know a little about JSPs and Servlets and I would like to get myself up to speed so I can understand and contribute to the Web App as fast as I could. What resources (tutorials, links, etc) should I be looking at? Am I supposed to get a book about JavaEE or something that focuses just on JSPs and Servlets?

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  • How to efficiently map tokens to code in a script interpreter?

    - by lithander
    I'm writing an interpreter for a simple scripting language where each line is a complete, executable command. (Like the instructions in assembler) When parsing a line I have to map the requested command to actual code. My current solution looks like this: std::string op, param1, param2; //parse line, identify op, param1, param2 ... //call command specific code if(op == "MOV") ExecuteMov(AsNumber(param1)); else if(op == "ROT") ExecuteRot(AsNumber(param1)); else if(op == "SZE") ExecuteSze(AsNumber(param1)); else if(op == "POS") ExecutePos((AsNumber(param1), AsNumber(param2)); else if(op == "DIR") ExecuteDir((AsNumber(param1), AsNumber(param2)); else if(op == "SET") ExecuteSet(param1, AsNumber(param2)); else if(op == "EVL") ... The more commands are supported the more string comparisions I'll have to do to identify and call the associated method. Can you point me to a more efficient implementation in the described scenario?

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  • Why did Ubuntu and Windows start hanging mysteriously after I took a vacation?

    - by Ashrey Goel
    I installed Ubuntu alongside my Windows 7, after partitioning my HDD using Easeus partitioning manager. It was working perfectly, no problems, no data lost or corruption. Then I went away for 2 days and in my absence I don't know what happened in that period, now both Windows 7 and Ubuntu keep hanging continuously, like when you paint and change a brush it'll hang, I mean on very simple commands and I know my computer does not hang on such petty things. I use it for developing music and the specification are: Model: DELL-XPS Processor: Intel i5, 2.53 GHz RAM/Memory: 4GB Hard disk size: 500GB HDD Windows 7 partition: 417 GB Ubuntu Partition: 50 GB Please Help.

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  • How to create a restricted SSH user for port forwarding?

    - by Lekensteyn
    ændrük suggested a reverse connection for getting an easy SSH connection with someone else (for remote help). For that to work, an additional user is needed to accept the connection. This user needs to be able to forward his port through the server (the server acts as proxy). How do I create a restricted user that can do nothing more than the above described? The new user must not be able to: execute shell commands access files or upload files to the server use the server as proxy (e.g. webproxy) access local services which were otherwise not publicly accessible due to a firewall kill the server Summarized, how do I create a restricted SSH user which is only able to connect to the SSH server without privileges, so I can connect through that connection with his computer?

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  • Terminal line glitches

    - by foxy
    I installed Ubuntu 11.10 mini + LXDE and wanted to make my command line different in terminal (than just plain white), so I added blue color to path line (everything until $ sign) and it works fine but I have two strange glitches now: When i write a line which is longer than terminal window, instead of starting at next line it starts at the same one, overwriting everything which was in there. Sometimes while navigating over previous commands (up/down arrow keys) some part of command gets stuck and is treated as part of prompt (the blue text), but it is white and is non-deletable and is not taken as part of command when i press enter. What could I mess up? The bad thing is that I don't remember what exactly did I change, but i'm sure I changed only one line in bashrc

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  • ralink rt2860 not working anymore in ubuntu 12.10

    - by greenit
    I just upgraded from Ubuntu 12.04 to 12.10, however, my network card is not working anymore... When i had 12.04 installed, i just had to download the driver from Ralink, go to the directory and enter these commands: $ make $ sudo make install and the network card worked... now, when I want to do this in ubuntu 12.10, it seems like it works, but it doesn't. I can enable the module, it recognizes the network card, but i am unable to connect to any wireless network... How can i get my wireless card working again? If any1 knows a solution, please tell it to me, thx in advance

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  • Adding user to chroot environment

    - by Neo
    I've created a chroot system in my Ubuntu using schroot and debrootstrap, based on minimal ubuntu. However whenever I can't seem to add a new user into this chroot environment. Here is what happens. I enter schroot as root and add a new user 'Bob'.(Tried both adduser and useradd commands) The username 'Bob' lists up in /etc/passwd file and I can 'su' into the user 'Bob'. So far so good. When I log out of schroot, and re-enter schroot, the user 'Bob' has vanished!! There is no mention of Bob in /etc/passwd either. How do I make the new user permanent?

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  • Double click executable file and nothing happens

    - by Ralf Tiede
    I'm trying to install a game for Linux called Myth 2. Autorun doesn't run when I insert the CD. When I double-click or right-click and the select "Open" on the Setup file, a box appears saying that it's an executable file, and what I want to do. I click on "Run", but nothing happens after that. I checked the permissions, and it allows it running the executable. How do I install this game? Please break down instructions as much as possible, I'm not used to using commands and Terminal. ;)

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  • How do I set up hosting a domain name at home with Apache?

    - by Andrew McIntyre
    I am relatively new to Ubuntu Linux and I am struggling to figure out the basic set-up of hosting a domain name at home with Apache2. I understand that you have to change your IP from dynamic to a static IP Address but I am not sure how you achieve that step. I am looking for some assistance on this on how to enable self signing certificates, make the domain name resolve on the Internet from hosting the website on the web server, enabling protected directories and the basic commands of accessing the directory where the website files can be uploaded and available on the World Wide Web.

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  • Find the latest file by modified date

    - by Rich
    If I want to find the latest file (mtime) in a (big) directory containing subdirectories, how would I do it? Lots of posts I've found suggest some variation of ls -lt | head (amusingly, many suggest ls -ltr | tail which is the same but less efficient) which is fine unless you have subdirectories (I do). Then again, you could find . -type f -exec ls -lt \{\} \+ | head which will definitely do the trick for as many files as can be specified by one command, i.e. if you have a big directory, -exec...\+ will issue separate commands; therefore each group will be sorted by ls within itself but not over the total set; the head will therefore pick up the lastest entry of the first batch. Any answers?

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  • Is it possible to power up ports on a USB hub from Ubuntu?

    - by James Henstridge
    I have a D-Link DUB-H7 powered USB 2.0 hub connected to my computer. Occasionally when I reboot the system, I've noticed that some of the ports on the hub get powered down: the green light next to the port is turned off, and the device attached to that port is not visible to lsusb or similar commands. Devices attached to the other ports on the hub function as normal. I am able to restore the ports by disconnecting power to the hub temporarily (from the computer, AC adapter and any devices that might provide any power such as my phone), but this is a bit of a hassle. It seems like something that might be related to power management, so is there some way you can tell the USB hub to power up through software?

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  • Initramfs error during boot

    - by PoohJuice
    Boot from (hd0,0) ext3 238ac8ca-9576-443d-8e23-8dd836cd2683 Starting up ... mount: mounting /dev/disk/by-uuid/238ac8ca-9576-443d-8e23-8dd836cd2683 on /root failed: Invalid argument mount: mounting /dev on /root/dev failed: No such file or directory mount: mounting /sys on /root/sys failed: No such file or directory mount: mounting /proc on /root/proc failed: No such file or directory Target filesystem doesn't have requested /sbin/init. No init found. Try passing init= bootarg. BusyBox v1.15.3 (Ubuntu 1:1.15.3-1ubuntu5) built in shell (ash) Enter 'help' for a list of built-in commands.

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  • BlueStacks Joins Forces with AMD; Launches AMD-only Enhanced Android App Launcher

    - by Jason Fitzpatrick
    Last fall we showed you how to run Android apps on your Windows PC with BlueStacks. Now BlueStacks has partnered with AMD to offer even better Android emulation on AMD-powered Windows machines. Check out our original overview and installation guide for BlueStacks to get a feel for what you can do with the app. If you’re sporting an AMD CPU, hit up the link below to check out the AMD AppZone to grab some of the thousands of Android apps you can enjoy on your desktop. AMD AppZone: Android [via Gigaom] 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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  • ubuntu software center only opens for a few seconds, then crashes?

    - by Sarah Mae
    so i've been googling this question all day, and i've tried everything. i've tried uninstalling and reinstalling USC multiple times, i've tried basically all of the terminal commands that these forums/ask boards have recommended, to no avail. i'm at a loss. i'm using ubuntu 12.04 :O edit// i should probably be more specific about my problem! ahah. everytime i try to open USC, the frame and everything will show up & it'll load for about 5 seconds, then it'll turn gray & i'll have to force quit it :I

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  • How To Convert Virtual Machines Between VirtualBox and VMware

    - by Chris Hoffman
    Migrating to another virtual machine program can be intimidating. if you already have your virtual machines set up they way you like them, you don’t necessarily have to install them from scratch – you can migrate your existing virtual machines. VirtualBox and VMware use different virtual machine formats, but each supports the standard Open Virtualization Format. Convert your existing virtual machine to OVF or OVA and you’ll be able to import it into another virtual machine program. Unfortunately, this may not always work perfectly, as VirtualBox and VMware both seem to use slightly different OVA/OVF implementations that aren’t entirely compatible. If this doesn’t work, you may want to reinstall your virtual machine’s guest operating system from scratch. 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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  • Can't copy from hfs+ external

    - by Janine
    I've spent days and days trying to figure this out, but still can't. I think I've read every article on this and tried all there is to try, and I still can't copy any file from my mac-formatted hfs+ external drive. Sorry if there's still an article I've missed.. I have disabled journaling and tried all the hfsprogs commands I could find, but still whenever I click on a folder on the external and try to copy it to my home directory, I get this: "The folder xxx cannot be handled because you don't have permission to read its content." I then found an article about inoring this by copying files through the Terminal. When trying to run the sudo cp -r command in the Terminal with my external drive path, I always get 'no such file or directory'.. Does anyone have another suggestion for me? Thanks in advance!

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  • Audio Stutter in in ubuntu 12.04

    - by Andrew Redd
    After upgrading to precise my audio is stuttering. It is happening, in VLC, mplayer, and anything streaming from the internet. I followed the procedures in https://help.ubuntu.com/community/SoundTroubleshootingProcedure but nothing has helped so far. There is the problem that the driver version is out of date but it does not seem to want to update with the given commands. $ bash alsa-info.sh --stdout |grep version Driver version: 1.0.24 Library version: 1.0.25 Utilities version: 1.0.25 How can I upgrade the driver and fix the stuttering?

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  • How can I install canon pixma ip100 driver for Ubuntu 12.04LTS 64bit?

    - by kina
    I tried installing the driver by typing the following commands in the terminal: sudo add-apt-repository ppa:michael-gruz/canon - the result was the following: You are about to add the following PPA to your system: More info: https://launchpad.net/~michael-gruz/+archive/canon Press [ENTER] to continue or ctrl-c to cancel adding it Then I typed: sudo apt-get update - the result was the following: Executing: gpg --ignore-time-conflict --no-options --no-default-keyring --secret-keyring /tmp/tmp.HDuHmOSJ0l --trustdb-name /etc/apt/trustdb.gpg --keyring /etc/apt/trusted.gpg --primary-keyring /etc/apt/trusted.gpg --keyserver hkp://keyserver.ubuntu.com:80/ --recv 84E550CD36EC35430A66AC5A03396E1C3F7B4A1D gpg: requesting key 3F7B4A1D from hkp server keyserver.ubuntu.com gpg: key 3F7B4A1D: "Launchpad Misakovi" not changed gpg: Total number processed: 1 gpg: unchanged: 1 I typed the next command: sudo apt-get install cnijfilter-ip100series The return response was: Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package cnijfilter-ip100series Does anyone know the solution? Kina

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  • Should I Leave My Laptop Plugged In All The Time?

    - by Jason Fitzpatrick
    Should you leave your laptop plugged in and charging when you’re not on-the-go? What’s best for the battery? What’s best for your user experience? Read on as we investigate. Image available as wallpaper-size download here. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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  • Update: TFS Power Tools March 2011

    - by Enrique Lima
    There is an update available for the TFS Power Tools and the TFS Build Power Tools. Among the updates to the Tools: Changes to the Team Foundation Server Backups Add-In for TFS Admin Console. Added functionality to the Windows Shell Extension. Changes to the tfpt command line tool that allows you to script build management commands. For a full detail of the changes, read Brian Harry’s post  http://blogs.msdn.com/b/bharry/archive/2011/03/03/mar-11-team-foundation-server-power-tools-are-available.aspx To download the Power Tools: Team Foundation Server Power Tools Team Foundation Server Build Extensions Power Tool

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  • Backup systems config files

    - by David ???
    I'm planning on installing nVidia proprietary drivers on my Ubuntu 10.10. Historically this always ends-up with me being left with no graphical interface. No ability to revert - and reinstalling the whole system. So now, before trying this anew, I wish to backup all relevant config files. I'll try 1 or 2 methods. I'll list each one's commands. I'll appreciate if anyone can tell me how to backup the relevant file, or what's the reverse of this operation. 10x, David Method I - as described here: apt-get --purge remove xserver-xorg-video-nouveau As described in this answer: edit /etc/default/grub and add the line GRUB_CMDLINE_LINUX="nouveau.modeset=0" sudo update-grub Reboot Install original drivers downloaded from nVidia site. Method II - as described here: sudo apt-get purge nvidia* [possibly 'sudo gedit /etc/modprobe.d/blacklist.conf' adding 'vga16fb' 'nouveau' sudo apt-get install nvidia-glx-185 sudo modprobe nvidia sudo lsmod | grep -i nvidia sudo nvidia-xconfig

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  • using heightmap to simulate 3d in an isometric 2d game

    - by VaTTeRGeR
    I saw a video of an 2.5d engine that used heightmaps to do zbuffering. Is this hard to do? I have more or less no idea of Opengl(lwjgl) and that stuff. I could imagine, that you compare each pixel and its depthmap to the depthmap of the already drawn background to determine if it gets drawn or not. Are there any tutorials on how to do this, is this a common problem? It would already be awesome if somebody knows the names of the Opengl commands so that i can go through some general tutorials on that. greets! Great 2.5d engine with the needed effect, pls go to the last 30 seconds Edit, just realised, that my question wasn't quite clear expressed: How can i tell Opengl to compare the existing depthbuffer with an grayscale texure, to determine if a pixel should get drawn or not?

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