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  • Which are the most important directories to backup on a Linux server?

    - by QAH
    Hello everyone! I'm running an Ubuntu 9.10 Linux server. I'm trying to find a way to backup the machine while it is running and from what I see, this eliminates the disk clone utilities. All of the disk clone stuff I have seen for Linux requires that you reboot into a special live CD. So my question is this, what is the best solution for backing up the system while it is running? Also, I don't really care about the OS config too much, I just want to be able to keep my stored files and my programs that I have installed on it. Thanks

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  • What is the fastest way to reload history commands begin with certain characters in linux?

    - by gerry
    In Dos we can input the first several characters to filter command history and find proper one rapidly. But how to do the same thing in Linux ? for example when I am testing a local server: cd sudo /etc/init.d/vsftpd start wget ... ls emacs ... sudo /etc/init.d/vsftpd restart sudo /etc/init.d/vsftpd stop ... In Dos you can easily type sudo and switch among the three commands beginning with it using arrow keys. But in Linux, is below command the best we can do ? historty | grep sudo I don't like it, because history can easily become a mess, and it also need mouse action.

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  • Which filename encoding should I use to be compatible with Windows, Mac and Linux.

    - by jverdeyen
    I'm using a Linux server as fileshare. These files are accessed by Windows computers with a Samba server, accessed by Macs with a netatalk server (afpd) and also trough ssh an sftp for Windows, Macs and Linux system. It seems like some of these systems care about the use of characters in filenames and some don't.. There is a tool called 'convmv' to convert filenames from one to another, but which one should I use? Should I setup the Samba server for a defined file encoding? Same for netatalk?

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  • How stable are Cisco IOS OIDs for querying data with SNMP across different model devices?

    - by Daniel Papasian
    I'm querying a bunch of information from cisco switches using SNMP. For instance, I'm pulling information on neighbors detected using CDP by doing an snmpwalk on .1.3.6.1.4.1.9.9.23 Can I use this OID across different cisco models? What pitfalls should I be aware of? To me, I'm a little uneasy about using numeric OIDs - it seems like I should be using a MIB database or something and using the named OIDs, in order to gain cross-device compatibility, but perhaps I'm just imagining the need for that.

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  • 2D distortion of a face from an image on iOS? (similar to Fat Booth etc.)

    - by Dominik Hadl
    I was just wondering if someone knows about some good library or tutorial on how to achieve a 2D distortion of a face taken from an image taken by the user. I would like to achieve a similar effect to the one in Fatify, Oldify, all those Fat Booths, etc., because I am creating an app where you will throw something at the face and I would the face to jiggle and move when the object hits it. How should I do this?

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  • How to make an ISO copy of Linux-filesystem and user files of VPS Debian based?

    - by moogeek
    Hello! I have a Debian-Based VPS on some hosting. I want to migrate from it and i need to make a full copy of all Linux-filesystem (and installed packages) + all home directory with website files. And then pack/convert it to ISO image so that to use it on cloud hostings like Amazon. The problem is that i have only ssh root access. Hosting support can't do that for me. Another part of the question - is it possible to enlarge the Linux-filesystem by not re-installing it and using the free space of home directory? Is it possible to do? I guess it is possible with rsync or something like that. Will my Mysql databes copy together with all other data? Thanks in advance!

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  • Installing linux on a crippled machine via network boot?

    - by networkbooter
    I have a somewhat ancient Toshiba laptop (which can't boot from USB) that I want to install linux on (probably Ubuntu). I'm currently running Windows XP and Ubuntu via Wubi. I want to delete these OSs and replace with Ubuntu only. The laptop does have a network boot option. I'm wondering if the easiest way might be to setup a network boot server on my other computer (which runs Ubunutu) and boot the laptop from it. Could this allow me to install Linux on the laptop? I can't seem to find instructions on the 'net as to how to go about doing this.

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  • Does ILOM on recent Sun rackmount servers fully support Linux?

    - by orange80
    Do the recent Sun rackmount servers with ILOM fully support installation of Linux (Ubuntu or Fedora maybe) via the ILOM (connected by ssh) without having to hook up a display, kbd, and mouse? I have an old Sun v20z right now that will install Solaris no problem over the Service Processor but when trying to install Ubuntu 9 64-bit server I get one line on the console then it goes blank. I'd be interested in know which if any of the recent x64 models would allow me to install and run linux while completely avoiding any need for external display, keyboard, or mouse. Thanks!

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  • HTML5 video tag with multiple bitrate videos?

    - by Joanne
    I have MP4 video files encoding at different bitrate to be compatible for both iOS on Wifi and Edge connection. I would like to have them progressive loaded form my website using HTML5 video tag. video_big.mp4 encoded for iOS on Wifi H.264 Baseline, 25fps, 640x480, 500kbps video_small.mp4 encoded for iOS on Edge/3G H.264 Baseline, 25fps, 320x240, 56kbps My question is: How can I write the HTML5 video tag to serve video_big.mp4 to iOS devices that connected through Wifi, and serve video_small.mp4 to iOS devices that connected through Edge/3G? I'm running on PHP/Apache server. Thank you :)

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  • How do I configure NTLM authentication in Firefox on Linux?

    - by tolomea
    Our IT department have NTLM deployed through the intranet servers. I've set network.automatic-ntlm-auth.trusted-uris value in Firefox on some of the Windows machines and that works fine. However setting it in Firefox on the Linux machines is not working. This doesn't surprise me at all, I've no notion of where Firefox on Linux is supposed to get the authentication details from. So how is this process supposed to work? what bits of config / infrastructure am I missing?

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  • In Linux, are there any plug-ins to let me do `<Win>`+`<Num>` style app switching (like Windows 7's superbar)?

    - by kizzx2
    Using Windows 7's superbar, I can select/launch the 2nd application group by <Win>+<2>. We have DockbarX in GNOME, which is nice (grouping the windows like Windows 7), but it doesn't enable the <Win>+<2> style keybaord shortcuts. Any suggestions? This is not restricted to making Linux like Windows. But I just find the <Win>+<2> style shortcut very useful. Are there similar ways in Linux to quickly switch between specific apps without pressing <Alt>+<Tab> many many times?

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  • Is there an encrypted write-only file system for Linux?

    - by Grumbel
    I am searching for an encrypted filesystem for Linux that can be mounted in a write-only mode, by that I mean you should be able to mount it without supplying a password, yet still be able to write/append files, but neither should you be able to read the files you have written nor read the files already on the filesystem. Access to the files should only be given when the filesystem is mounted via the password. The purpose of this is to write log files or similar data that is only written, but never modified, without having the files themselves be exposed. File permissions don't help here as I want the data to be inaccessible even when the system is fully compromised. Does such a thing exist on Linux? Or if not, what would be the best alternative to create encrypted log files? My current workaround consists of simply piping the data through gpg --encrypt, which works, but is very cumbersome, as you can't easily get access to the filesystem as a whole, you have to pipe each file through gpg --decrypt manually.

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  • ATI Radeon Drivers works with which linux distribution and version?

    - by amit.codename13
    I have ATI Mobility Radeon HD 5850 graphics card. Almost every new linux distribution seems to have an issue with it, when i install the drivers. Working without utilizing the graphics card leaves me so unproductive. So i made a plan to use older versions of linux, any distribution suitable as a desktop distribution. UPDATE: The kind of problems that i am facing are, 1) After installing drivers the system boots and hangs, 2) There are unusual lines over the screen 3) After upgrade system doesn't start properly(hangs the usual old way) The kind of answers i am looking for is, distribution X(the newer the version the better) doesn't have the above problem after installing drivers for ATI Mobility Radeon HD 5850 graphics card. UPDATE: The new drivers released by AMD seems to fix all the issues, although they are still beta Thanks

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  • how to search values in a dictionary that is assigned to a key for a PFObject without downloading all PFObjects of that class (iOS/Parse)

    - by mkc842
    Suppose I have a set of PFObjects (essentially dictionaries) of class "myObject". Objects of this class contain for key "myDictionary" a dictionary. "myDictionary", in turn, has a key "myKey" that I want to access and search for matches against "mySearchTerm". I don't want to download all myObject objects and then iterate through them to check myKey in each, because that would be very inefficient. I want to use a findObjects message to return just the matches. Is such a query possible? In other words, how can I search the values in a dictionary that is assigned to a key for a PFObject without downloading all PFObjects of that class? Here's what it might look like if there were a simple method for it, but I made up the containsKey part to clarify what I am contemplating: PFQuery *objectQuery = [PFQuery queryWithClassName:@"myObject"]; [objectQuery whereKey:@"myDictionary" ~containsKey~:@"myKey" equalTo:"mySearchTerm"];

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  • How can I install/uninstall VMware Workstation silently in Linux?

    - by Landy
    I want to install VMware Workstation in Windows and Linux host silently. In Windows host, I can use the silent installation features of the Microsoft Windows Installer. But I didn't find a way to perform silent install/uninstall in Linux host. I had to click "I agree" or "Close" to make the installation continue or complete. If there has a Workstation installed, I can use vmware-installer -i path to installation file" --console --required to update the Workstation to a different version. But this command only exists after a Workstation has been installed.

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  • How to watch disk free space change on Linux?

    - by Bob
    As the title implies, I want to know how to watch disk free space change on Linux instead polling it periodically via statfs. When the free space is changed, a signal is emitted to allow the application having a chance to handle the change event. On Windows, it can be done by FindFirstChangeNotification with FILE_NOTIFY_CHANGE_SIZE. When the free space is changed, the HANDLE object returend by FindFirstChangeNotification gets signaled and let application do something. Is there any similar way to do that on Linux? Thanks.

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  • How to copy password from Mono-executed KeePass2 to xterm on Linux?

    - by Steve Emmerson
    I use KeePass2 to access username/password information in a Dropbox file. This allows convenient access from multiple devices. I can't seem to copy a password to the clipboard on my Linux 2.6.27.41-170.2.117.fc10.x86_64 system, however, in order to supply the password to a prompt in an xterm(1). I've tried both Ctrl+C/Ctrl+V and highlighting and mouse button 2 clicking. The KeePass2 program on the Linux system is executed by Mono. How can I copy the password to the xterm(1)? [Aside: I think we need a "KeePass" tag.] ADDENDUM: My mouse buttons were misconfigured: button 2 wasn't set to "copy". Sorry for the false alarm.

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  • Amazon Linux AMI release 2010.11.1 corresponds to which RHEL version (4/5/6)?

    - by Jayesh
    I am using the default Amazon Linux AMI in an EC2 instance - Amazon Linux AMI release 2010.11.1. I can see that it's a Redhat based system, but after trying many tools (/etc/issues, uname -a, lsb_release), I cannot tell which version of RHEL or CentOS is it based on. I need to get some packages that are not available in Amazon's package repos. I have list of custom yum repos that I can use, but since I don't know which RHEL version is the Amazon AMI based on, I cannot choose from different versions of repos. How can I find whether it's running RHEL 4/5/6 (or their CentOS counterparts)?

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  • How to tune system settings for mongoDB on Linux?

    - by jsh
    Trying to squeeze a lot out of one question here -- please bear with me. Although the MongoDB man pages make several useful recommendations about system settings like ulimit (http://docs.mongodb.org/manual/reference/ulimit/), and other production factors (http://docs.mongodb.org/manual/administration/production-notes/) they seem mysteriously silent on things like virtual memory and swap settings. The closest we get to a hint is that "...the operating system’s virtual memory subsystem manages MongoDB’s memory..." (http://docs.mongodb.org/manual/faq/fundamentals/#does-mongodb-require-a-lot-of-ram). Running the same job - high writes and high reads on about 10,000,000 records in a single collection -- on my 4-processor, 4GB RAM macbook and an 8-core ubuntu box with 64GB RAM I saw dramatically WORSE read performance on the linux box with factory settings, and could hear the disk constantly spinning, indicating high I/O and presumably swapping. Yes, other things were happening on the box, but there was plenty of free RAM, disk space, etc.; furthermore, I did not see evidence that Mongo was expanding to take advantage of all that free RAM as it is touted to do. Linux box default settings were as follows: vm.swappiness =60 vm.dirty_background_ratio = 10 vm.dirty_ratio = 20 vm.dirty_expire_centisecs =3000 vm.dirty_writeback_centisecs=500 I hazarded some guesses looking at docs and blogs for other types of databases (Oracle, MYSQL, etc.), experimented, and adjusted as below. vm.swappiness=10 vm.dirty_background_ratio=5 vm.dirty_ratio=5 vm.dirty_writeback_centisecs=250 vm.dirty_expire_centisecs=500 I saw some immediate apparent improvements in read time. However, when I ran my test jobs again, read performance continued to be painfully sluggish during heavy writes. Then, I REBUILT the collection from an available data source - and suddenly I can read at 1ms or less per record WHILE doing the write job! So the question is really two-fold: 1) What are appropriate VM settings for MongoDB on Linux? 2) (bonus) Does Mongo do some checking or optimization with the OS while data is being built? In other words, if I have built a large data set with suboptimal VM or I/O settings, does Mongo make assumptions during the memory-mapping process that will fail to take advantage of optimizations down the road? Obviously I don't fully grok memory mapping under the hood (I was hoping I wouldn't have to). Any help appreciated...thanks! -j

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  • Is there an encrypted write-only file system for Linux?

    - by Grumbel
    I am searching for an encrypted file system for Linux that can be mounted in a write-only mode, by that I mean you should be able to write/append files, but not be able to read the files you have written. Access to the files should only be given when the filesystem is mounted via a password. The purpose of this is to write log files and such, without having the log files themselves be accessible. Does such a thing exist on Linux? Or if not, what would be the best alternative to create encrypted log files? My current workaround consists of simply piping the data through gpg --encrypt, which works, but is very cumbersome, as you can't get easy access to the file system as a whole, you have to pipe each file through gpg --decrypt manually.

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  • Another developer revoked and re-created my client's iOS Distribution Certificate - does this mean I can never update my client's existing app?

    - by Schnapple
    Here is the story so far: A client hired us to do an iPhone app for them. This client had never done an iPhone app before and as part of the arrangement we handled all aspects for them, including app store submission, and we handle some level of future development (new features, bug/security fixes, etc.) We created a Distribution certificate and key pair on the client's behalf We developed the app, published it to the App Store without incident Some time later the client hired a second developer to do a different app for them This second developer, it appears, has revoked the existing Distribution certificate and created a new one with a new key pair on their system This second developer shared the new Distribution certificate and key pair with us for future reference. Due to user error, this new certificate and key pair has now been imported onto the Macintosh where the original certificate and key pair for the original app we developed were created and the originals were not backed up. So we have App #1 on the App Store with Distribution certificate/key pair #1 App #2 either on the App Store or soon to be using Distribution certificate/key pair #2 Distribution certificate/key pair #1 appears to be lost now So my question is: if we ever need to update App #1, will we be able to, using Distribution certificate/key pair #2? Or will we have to upload it as a new app?

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