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  • Repeating characters in VIM insert mode

    - by Cthutu
    Is there a way of repeating a character while in Vim's insert mode? For example, say I would like to insert 80 dashes, in something like emacs I would type: Ctrl+U 8 0 - The only way I know how to do it in VIM is to exit normal mode for the repeat argument, then go back into insert mode to type the dash, then exit to insert the actual dashes, AND then go back into insert mode to carry on typing. The sequence is a really long: <ESC> 8 0 a - <ESC> a It would be nice not to switch in and out of modes. Thanks

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  • Hot-swapping drives

    - by user57770
    I have hot swap drives and controllers, but have never actually used the hot swap capability. What is the procedure for doing so? Do I need to warn Linux that I'm about to pull a drive out? Should I do anything after I put a drive back in? Does it make a difference whether the drive is part of a RAID set? The drives are generally RAIDed, but not always. Any RAID sets are managed by Linux, rather than the controller. The machines are running Fedora and CentOS.

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  • Is there an user-level accessible font table present in Linux?

    - by youngdood
    Hi again Stackoverflow! Since there is this: http://en.wikipedia.org/wiki/Code_page_437 For MSDOS, is there something similar for Linux systems? Is it possible to access that font data via userland program? I would actually just need an access to the actual bit patterns which define the font, and I would do the rendering myself. I'm fairly sure that something like this exists, but I haven't been able to find what exactly is it and how to access it. After all, e.g. text mode console font has to reside somewhere, and I really do hope it is "rawly" accessible somehow for a userland program. Before I forget, I'm programming my program in C, and have access only to the "standard" linux/posix development headers. The only thing I could came up with myself is to use the fonts in /usr/share/fonts, but having to write my own implementations to extract the data from there doesn't sound really an option; I would really want to achieve this with the least amount of bytes possible, so I feel I'm left with finding a standard way of doing this. It's not really feasible for me to store my own 8x8 ASCII-compatible font with the program either(it takes some 1024 bytes(128 chars * 8x8 bits) just to store the font, which is definitely unacceptable for the strict size limits(some < 1024 bytes for code+data) which I am working with), so being able to use the font data stored at the system itself would greatly simplify my task.

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  • Will learning to use Fedora also teach me my way around Redhat (CentOS)?

    - by Matt Untsaiyi
    I want to dive into the open source world and start using a Linux distro while learning to program. I've looked over the options and it pretty much boils down to Fedora or CentOS. The reasoning behind it is I'm hoping to kill two birds with one stone... Redhat seems to be "the choice" for servers, so I figure as I learn to program, I can also learn my way around Linux... or Redhat more specifically... and get that under my belt too. I want to use Fedora, and be on the frontier of new software (since I'm not doing anything critical), but if it's completely different than Redhat I'd rather just use CentOS. So is it? Or can I use one and know the other?

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  • Debug.Assert Appears in Release Mode

    - by Ngu Soon Hui
    We all know that Debug.Assert will not be compiled into the dlls when compiled in release mode. But for some reason Debug.Assert did appear in the release version of a component I wrote. I suspect that I might have mess up my csproject setting. Any idea why Debug.Assert appears in release mode? P/S: I have double checked to make sure that I was really compiling in release mode before asking this question.

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  • What's the best way to install software in Ubuntu?

    - by the0ther
    I'm new to Ubuntu and have been away from Linux for a while. I'm used to Windows and find this tedious on Linux but I want to give it a shot. My tendency is to prefer GUI tools over command-line, and Ubuntu is a distro that seems to cater to usability. I note it is based somewhat on apt-get which I've heard good things about. What's the best practise for installing apps on Ubuntu? Should I prefer to try my options in this order? Synaptic Package Manger apt-get on the command line .tar.gz files (old school)

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  • what may cause unexpected log outs?

    - by lalebarde
    Sometimes, my Linux PC unexpectedly closes my session (log out) while I am working, and puts me back the login window. If I have terminal 1 logged with root and 2 logged with another user (without X), these ones are not logged out. For example, for the last three hours, it has happened five times. Other times, it leads to a reboot. So I have investigated: the UPS, but the behaviour is unchanged without it). the temperatures, but everything is fine (cpu, disks, video card). I have started to investigate also: the memory (partially tested - I have to run a full testyt next night). EDIT: totally tested and passed. My configuration is: Linux 2.6.37-tuxonice x86_64 Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz. Any idea please?

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  • [org-mode]: repeating task in every Mon, Wed, Fri at 18:00, need help with sexp.

    - by zeroDivisible
    Hello, As I had written in title, I need a little help with improvement of this sexp: * TODO remeber about thingie. SCHEDULED: <%%(or (= 1 (calendar-day-of-week date)) (= 3 (calendar-day-of-week date)) (= 5 (calendar-day-of-week date)))> Now it shows itself in the following days, but I would like to change two things about it: How can I also schedule on specific hours (i.e. 18:00 - 20:00) in the following days How can I made this task repeat itself, just like it repeats itself with <2010-05-13 Wed +1w> (by repetition I mean something like it automatically logs the closing date and time and comes back to the TODO state). I will be grateful for any help. Best regards, Mike.

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  • Joining windows LANs through SSH tunnel

    - by Akke
    I have at home a computer (a windows 7 ult machine) I need to use to manage stuff at the office which hosts windows and linux servers. I am able to set up a SSH tunnel (atleast for firefox proxying) and I'd like to be able to access shared windows network drives on the other end too. I heard something about needing some kind of samba service but I couldn't find anything useful by googling that. What do I need in order to make an SSH tunnel to the office (a NAS, running linux) so that I can access windows server 2008 and windows 7 network drives? Bonus: I'd like to be able to access a MSSQL database server too if it's possible.

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  • Will the program installed in a folder function properly if I remove the write permission in linux? [on hold]

    - by Kevin Powell
    I have a user account on a cluster( a server), and can only install program like python on the home folder. In case I might accidentally delete the bin, lib, share,include folders coming with the installation of python on the home folder. I change the permissions of the above folder like this chmod -w folder but I am worried when the program need to write/delete some files of the folders, it might not function because the removal of write permission. Am I right? or I the run, including write files in the folder, of a program have permissions different than the permission of user. BTW, is there a way to hide the folders without changing the names?

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  • Emacs stops taking input when a file has changed on disk [migrated]

    - by recf
    I'm using Emacs v24.3.1 on Windows 8. I had a file change on disk while I had an Emacs buffer open with that file. As soon as I attempt to make a change to the buffer, a message appears in the minibuffer. Fileblah.txt changed on disk; really edit the buffer? (y, n, r or C-h) I would expect to be able to hit r to have it reload the disk version of the file, but nothing happens. Emacs completely stops responding to input. None of the listed keys work, nor do any other keys as far as I can tell. I can't C-g out of the minibuffer. Alt-F4 doesn't work, not does Close window from the task bar. I have to kill the process from task manager. Anyone have any idea what I'm doing wrong here? In cases it's various modes not playing nice with each other, for reference, my init.el is here. Nothing complex. Here's the breakdown: better-defaults (ido-mode, remove menu-bar, uniquify buffer `forward, saveplace) recentf-mode custom frame title visual-line-mode require final newline and delete trailing whitespace on save Markdown mode with auto-mode-alist Flyspell with Aspell backend Powershell mode with auto-mode-alist Ruby auto-mode-alist Puppet mode with auto-mode-alist Feature (Gherkin) mode with auto-mode-alist The specific file was a markdown file with Github-flavored Markdown mode and Flyspell mode enabled.

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  • XRDP errors when trying to use sesman-x11rdp

    - by Nicholas
    I've just installed Ubuntu 11.10 Desktop on an old laptop of mine and I wanted to set it up so I could remote into it from my windows desktop. I've installed XRDP, but when I attempt to login using sesman-x11rdp it logs in, then the window shuts down. I've checked over the logs and here is what I get at the time of login: [20120123-16:49:23] [INFO ] scp thread on sck 8 started successfully [20120123-16:49:23] [INFO ] granted TS access to user nicholas [20120123-16:49:24] [INFO ] starting X11rdp session... [20120123-16:49:24] [CORE ] error starting X server - user nicholas - pid 3869 [20120123-16:49:24] [DEBUG] errno: 2, description: No such file or directory [20120123-16:49:24] [DEBUG] execve parameter list: 11 [20120123-16:49:24] [DEBUG] argv[0] = X11rdp [20120123-16:49:24] [DEBUG] argv[1] = :11 [20120123-16:49:24] [DEBUG] argv[2] = -geometry [20120123-16:49:24] [DEBUG] argv[3] = 1280x720 [20120123-16:49:24] [DEBUG] argv[4] = -depth [20120123-16:49:24] [DEBUG] argv[5] = 16 [20120123-16:49:24] [DEBUG] argv[6] = -bs [20120123-16:49:24] [DEBUG] argv[7] = -ac [20120123-16:49:24] [DEBUG] argv[8] = -nolisten [20120123-16:49:24] [DEBUG] argv[9] = tcp [20120123-16:49:25] [DEBUG] argv[10] = (null) [20120123-16:49:34] [ERROR] X server for display 11 startup timeout [20120123-16:49:34] [ERROR] X server for display 11 startup timeout [20120123-16:49:34] [INFO ] starting xrdp-sessvc - xpid=3869 - wmpid=3868 [20120123-16:49:34] [ERROR] another Xserver is already active on display 11 [20120123-16:49:34] [DEBUG] aborting connection... [20120123-16:49:34] [INFO ] session 3867 - user nicholas - terminated Can anyone point me to the proper way to get this working with x11rdp?

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  • Don't let the mouse wake up displays from standby

    - by progo
    I like to put my displays to powersave/standby mode when I leave the computer for a while. It would be ok if it weren't for oversensitive mouse. Sometimes the driver reads in some movement that's not visible to the naked eye (the cursor, that is) and it breaks the power save. It would wait for another 10 minutes before going back to its standby. My workaround is the following script bound to C-S-q: xlock -startCmd 'xset dpms 2 2 2' -endCmd 'xset dpms 600 1200 1300' -mode blank -echokeys -timeelapsed +usefirst By using xset I set the values to 2 seconds each before going to standby. It's not nice, anyway. Sometimes there are cool fortunes that I want to read before typing in the password. I could keep the cursor moving but it's cludgy. (By the way, xlock's option mousemotion doesn't help -- it just hides the cursor but the displays fire up nevertheless.) So the question: is there a way to make displays go standby and stay there until a keyboard key is pressed? I'm running gentoo and recent Xorg, but I hope the answer doesn't have to be distro-specific. Basically the answer can be as simple as how to enable/disable mouse within command line? It think that would do the job if DPMS doesn't know the idea.

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  • Apache directory structure with multiple hosted languages.

    - by anomareh
    I just got a new work machine up and running and I'm trying to decide on how to set everything up directory wise. I've done some digging around and really haven't been able to find anything conclusive. I know it's a question with a variety of answers but I'm hoping there's some sort of general guidelines or best practices to go by. With that said, here are a few things specific to my situation. I will be doing actual development and testing on the same machine as the server. It is a single user machine in the sense that I will be the only one working on the machine. There will be multiple hosted languages, specifically PHP and RoR while possibly expanding later. I'd like the setup to translate well to a production environment. With those 3 things in mind there are a couple of things I've had in the back of mind. Seeing as it's a single user machine I haven't been able to decide whether or not I should be working on things out of my home directory or if they should be located outside of it. I'm feeling that outside of a user directory would be better as it would translate better to a production environment, but I'm also not sure if that will come with any permission annoyances or concerns seeing as I'll be working on the same machine. Hosting multiple languages seems like it may be a bit quirky. With PHP I've found you're generally just dumping the project somewhere in the document root where as something like a Rails app you have the entire project and you only want the public directory in the document root. Thanks for any insight, opinion, or just personal preference from experience anyone can offer.

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  • ClearType setting ignored in Windows Virtual PC with Windows XP Pro

    - by Yadyn
    I have a VM set up through Windows Virtual PC for Windows XP Pro and I have been completely unable to get ClearType to work. I have turned it on in the Display - Appearance - Effects dialog but it seems like it completely ignores this. All text is still without any anti-aliasing. Even setting it to normal smoothing doesn't work. If I disable Integration Features, it seems to work, but then I lose a lot of nice features. What's weirder, is that the Windows XP Mode installed with Windows Virtual PC (this is separate from my XP Pro VM) works with both ClearType and Integration Features just fine. I turned it on the same way and it works like a charm, no problems. I'm running Windows 7 Professional 64-bit as the host OS and have the latest (to my knowledge) Windows Virtual PC installed. The only funny business I can think of is that I've enabled 24-bit color via the Group Policy setting inside each XP virtual machine (both Pro and the stripped down XP mode copy). This is a fairly well-known trick documented all over the web, but here's a typical post about it.

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  • How do I set up an IP address on a Linux VM running in VM Player so I can access it from my Windows 7 host?

    - by BradyKelly
    I have just installed an Openbravo appliance on my Windows 7 VM Player host. I am now staring at a command prompt that tells me to go to http://localhost to access the ERP system, but I cannot find any browser on the appliance. I am guessing I should rather follow their advice to configure an IP address for the Linux VM and just access that from a Windows browser on my host. How do I go about this? More specifically, How do I choose a local IP address to assign? How do I set things up so that this IP address is visible to my Windows host? Their help says to assign an DNS, to make the server visible to the internet, but internet visibility per se is not needed. How should I interpret or adapt this help for that? Finally to make the IP address available to the Internet, assign some DNS servers to it: $ echo "nameserver IP_DNS1" /etc/resolv.conf $ echo "nameserver IP_DNS2" /etc/resolv.conf

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  • Failed to su after making a chroot jail

    - by arepo21
    On a 64 bit CentOS host I am using script make_chroot_jail.sh to put a user in a jail, not permitting it to see anything expect it's home at /home/jail/home/user1. I did it typing this: sudo ./make_chroot_jail.sh user1 after, when trying to connect to user1 first i was getting an error like: /bin/su: user guest does not exist i have fixed this by copying some missed libraries: sudo cp /lib64/libnss_compat.so.2 /lib64/libnss_files.so.2 /lib64/libnss_dns.so.2 /lib64/libxcrypt.so.2 /home/jail/lib64/ sudo cp -r /lib64/security/ /home/jail/lib64/ But now, when trying to connect to user1 typing su user1 and then typing it's password, i am getting this error: could not open session So the question is how to connect to user1 in this situation? P.S. Here are the permissions of some files, this might be helpful in order to provide a solution: -rwsr-xr-x 1 root root /home/jail/bin/su drwxr-xr-x 4 root root /home/jail/etc -rw-r--r-- 1 root root /home/jail/etc/pam.d/su -rw-r--r-- 1 root root /home/jail/etc/passwd -rw------- 1 root root /home/jail/etc/shadow UPDATE1 After some modifications i managed to connect to user1, but the session closes immediately! I guess this a PAM issue, however cant find a way to fix it. Here the log entry for close action from /val/log/secure: Oct 6 15:19:42 localhost su: pam_unix(su:session): session closed for user user1 What makes the session to exit immediately after launching?

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  • Passing PATH through sudo

    - by whitequark
    In short: how to make sudo not to flush PATH everytime? I have some websites deployed on my server (Debian testing) written with Ruby on Rails. I use Mongrel+Nginx to host them, but there is one problem that comes when I need to restart Mongrel (e.g. after making some changes). All sites are checked in VCS (git, but it is not important) and have owner and group set to my user, whereas Mongrel runs under the, huh, mongrel user that is severely restricted in it's rights. So Mongrel must be started under root (it can automatically change UID) or mongrel. To manage mongrel I use mongrel_cluster gem because it allows starting or stopping any amount of Mongrel servers with just one command. But it needs the directory /var/lib/gems/1.8/bin to be in PATH: this is not enough to start it with absolute path. Modifying PATH in root .bashrc changed nothing, tweaking sudo's env_reset and keepenv didn't either. So the question: how to add a directory to PATH or keep user's PATH in sudo?

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  • How do hdparm's -S and -B options interact?

    - by user697683
    These two options seem confusing. For example: according to the man page -B 254 "does not permit spin-down". However, testing with -B 254 -S 1 the drive does spin down after 5 seconds. -B Query/set Advanced Power Management feature, if the drive supports it. A low value means aggressive power management and a high value means better performance. Possible settings range from values 1 through 127 (which permit spin-down), and values 128 through 254 (which do not permit spin-down). The highest degree of power management is attained with a setting of 1, and the highest I/O performance with a setting of 254. A value of 255 tells hdparm to disable Advanced Power Management altogether on the drive (not all drives support disabling it, but most do). -S Put the drive into idle (low-power) mode, and also set the standby (spindown) timeout for the drive. This timeout value is used by the drive to determine how long to wait (with no disk activity) before turning off the spindle motor to save power. Under such circumstances, the drive may take as long as 30 seconds to respond to a subsequent disk access, though most drives are much quicker. The encoding of the timeout value is somewhat peculiar. A value of zero means "timeouts are disabled": the device will not automatically enter standby mode. Values from 1 to 240 specify multiples of 5 seconds, yielding timeouts from 5 seconds to 20 minutes. Values from 241 to 251 specify from 1 to 11 units of 30 minutes, yielding timeouts from 30 minutes to 5.5 hours. A value of 252 signifies a timeout of 21 minutes. A value of 253 sets a vendor-defined timeout period between 8 and 12 hours, and the value 254 is reserved. 255 is interpreted as 21 minutes plus 15 seconds. Note that some older drives may have very different interpretations of these values.

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  • SFTP ChRoot result in broken pipe

    - by Patrick Pruneau
    I have a website that I want to add some restricted access to a sub-folder. For this, I've decided to use CHROOT with SFTP (I mostly followed this link : http://shapeshed.com/chroot_sftp_users_on_ubuntu_intrepid/) For now, I've created a user (sio2104) and a group (magento).After following the guide, my folder list look like this : -rw-r--r-- 1 root root 27 2012-02-01 14:23 index.html -rw-r--r-- 1 root root 21 2012-02-01 14:24 info.php drwx------ 15 root root 4096 2012-02-25 00:31 magento As you can see, i've chown root:root the folder magento I wanted to jail-in the user and ...everything else by the way. Also in the magento folder, I chown sio2104:magento everything so they can access what they want. Finally, I've added this to sshd_config file : #Subsystem sftp /usr/lib/openssh/sftp-server Subsystem sftp internal-sftp Match Group magento ChrootDirectory /usr/share/nginx/www/magento ForceCommand internal-sftp AllowTCPForwarding no X11Forwarding no PasswordAuthentication yes #UsePAM yes And the result is...well, I can enter my login, password and it's all finished with a "broken pipe" error. $ sftp [email protected] [....some debug....] [email protected]'s password: debug1: Authentication succeeded (password). Authenticated to 10.20.0.50 ([10.20.0.50]:22). debug1: channel 0: new [client-session] debug1: Requesting [email protected] debug1: Entering interactive session. Write failed: Broken pipe Connection closed Verbose mode gives nothing to help. Anyone have an idea of what I've done wrong? If I try to login with ssh or sftp with my personnal user, everything works fine.

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