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• TextMate suddenly highlighting all text dark red...?

  - by AP257

  I'm using TextMate on Snow Leopard, don't know much about how it works. After I hit an unknown keyboard shortcut, it suddenly decided to highlight almost all text in my Python files dark red - making all my Python virtually unreadable! I must have accidentally pressed a shortcut - but I've no idea what I did or how to turn it off, and can't find any relevant help in the manual or form. Even just 'turn off all highlighting' would do. Anyone know how to turn this highlighting off? Bit desperate! UPDATE: Figured it out. There's a tiny, tiny dropdown list at the very bottom of every TextMate editing window where you can set the language, so TextMate can highlight invalid syntax - I'd accidentally clicked on it and set the language to something other than Python. Will leave the question up though in case others have the same problem.

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• Using Lighttpd: apache prox or direct connection?

  - by Halfgaar

  Hi, I'm optimizing a site by using lighttpd for the static media. I've found that a recommended solution is to use Apache Proxy to point to the lighttpd server. But, does that use up an Apache thread/process per request? In my setup, I've noticed that all my processes are used up, even though they aren't doing anything, CPU wise. To free up apache processes, I've configured lighttpd and the amount of processes needed is lowered significantly, Munin shows. However, I've set it up to connect directly to lighty, to prevent apache workers from server static media. My question is: when using Apache Proxy, does that also use up a process/worker?

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• How to use register with CTRL-A or CTRL-X in vim

  - by Luc M

  Suppose that I have a number into register r. How could I use this value with CTRLA and CTRLX Here's an example to make it clearer: Suppose that I have this text file: 10 13 15 I want to to increase those numbers with the value in register r to obtain (if it contains 5) 15 18 20 Why I'm asking it ? Because I want to use CTRLA into a macro but the number of time that I need to apply CTRLA is only know at "run time". In a more general way, how could I execute a command a number of times stored in a register ? All of these questions and answers where interesting but they don't answer my question: http://stackoverflow.com/questions/1497958/how-to-use-vim-registers http://stackoverflow.com/questions/2405952/vim-register-use-in-ex-mode

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• How to track $HOME with git

  - by Francesco

  Hello, I would like to track my $HOME dir with git. I've got many other git repos in other subdirs (eg $HOME/projects/repo_1 and so on), which shouldn't be tracked, since they already are. I have found git-home-history but it appears from the archive that the project is no longer actively developed. What approach do you recommended ? Is ghh mature enough? I am on a Mac but I am interested in cross platform solutions, too. Thanks, Francesco ps: btw this is my first Super User question :-) I have looked but didn't find duplicates, please point me if this has been already discussed.

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• How to check the version of the dynamic linker?

  - by netvope

  If I run a binary compiled on a newer Linux distro on an older Linux distro, I may get an error like this: a.out: error while loading shared libraries: requires glibc 2.5 or later dynamic linker How can I check the version of the dynamic linker in a Linux system? Is it provided by a package? If so, what's the name of the package? And a theoretical question: Is it possible to update the dynamic linker? (I don't think I'm going to do this but I just want to know.)

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• Encryption of OS X to Windows SMB traffic and password

  - by Brian

  I connected to a Windows Server 2008 R2 shared folder from a Mac OS X Mountain Lion computer over the Internet using this command: mount -t smbfs //user@server/path/to/share local_folder Is traffic encrypted by default? What settings do I look at (if any) to know whether it was encrypted? If it wasn't encrypted, what's the easiest way to encrypt it? Was the password I typed at the command line encrypted? Update: sysadmin1138 has addressed the password question. Does anyone know how I can tell if the traffic itself is being encrypted?

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• Why does this package (ppa:ondrej/php5, it's PHP 5.5) break the apache2 installation?

  - by Panique

  Problem Currently this package (ppa:ondrej/php5) is quite popular for installing the latest version of PHP 5.5. I've worked quite much with it, and everything ran smoothy, on several (dev) servers. But from today (?) this breaks the apache2 installation (it empties the /etc/apache2/sites-available/default file). This is reproduceable. Way to reproduce (on naked Ubuntu 64 12.04 LTS) // basic installs sudo apt-get update sudo apt-get install apache2 sudo apt-get install php5 Apache is fine, nano /etc/apache2/sites-available/default has valid content now // getting PHP 5.5.x sudo apt-get install python-software-properties (for add-apt-repository) sudo add-apt-repository ppa:ondrej/php5 sudo apt-get update sudo apt-get install php5 // php -v shows successful install of PHP 5.5.x now Apache is broken, nano /etc/apache2/sites-available/default is empty now Question Why does this happen ? According to https://launchpad.net/~ondrej/+archive/php5 there were no changes in the last few days.

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• Is /dev in linux virtual?

  - by user973917

  Today at work a client had rm -rf /dev and ended up deleting two files in /dev/shm that forced his site to no longer work. From what I learned previously /dev is not virtual, but a fellow technician had suggested to reboot the server because /dev is virtual like /proc. Sure enough I rebooted the server and the files that the client rm -rf'd were there. So, my question is; is /dev virtual? Is it the kind of virtual like /proc? Is there more documentation on this? How can I restore the /dev files without a server reboot?

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• Can someone recommend a Compact Flash card to be used as a boot disk

  - by Hamish Downer

  I have an early Acer Aspire One netbook, and the flash drive is really slow at writing. I've taken it apart to add more RAM, but I've pretty much stopped using it. I've read about people replacing the SSD with a Compact Flash card and a CF to ZIF adapter but I've also read about some Compact Flash cards where the manufacturer has permanently disabled the boot flag to stop people doing this kind of mod. (Can't find the link any more though). So my most specific question is: can someone recommend a compact flash card that does allow the boot flag to be set? Please say whether you've done it yourself, or just heard about it from someone else. Beyond that, is this generally a problem?

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• OpenX : mySql VS PostgreSQL

  - by Andreas Grech

  I have been using OpenX's AdServer with mySql as a backend, and since OpenX allows one to choose between mysql and postgres, I was wondering if anyone ever used Postgres and wished to talk about their experience with it here. Also, is there anyone who maybe tried using OpenX with both and can offer a comparison between the databases ? I am asking this question because I was having some trouble recently with mySql because some tables crashed occasionally and proved problematic because of the overhead they generated; and as a consequence of this, Statistics where not being generated.

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• Ulimit settings in Oracle 11g on Linux 5

  - by Stuart

  Is there an issue with "Ulimit -Hn" being set too low (at 1024) when (Oracle recommend 65536)? This is for Oracle 64-bit 11g on Linux 5. It is one of the settings that appears to be woefully short of its recommendation. But I am also aware that the database server in question is an Oracle Data Guard Local Standby and should only really have a connection or two from its Primary database server (to ship the redo logs across). The Local Standby database server has 'hung' about 3 times in as many months and then requires a reboot. I do not have access to this server, so rely on others to look at logs etc. The sanity check on kernel params uncovered the low value for "ulimit -Hn". Has anyone ever seen that 'low' value cause a hang or crash?

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• How to calculate power/energy taken by computer and screen

  - by r0ca

  I need to investigate how much power my linux machine uses per week. I can take a look at the PSU but I would like to know how to calculate the average use of power it takes. I also need to know how much power a CRT screen use per week. Do I need to check the PSU Watt unit and Screen Watt usage and just add both to have the results? P.S. My english is not good, sorry about that! P.P.S. My question is not related to: http://superuser.com/questions/9946/how-to-choose-a-ups-calculate-power-for-a-new-pc

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• Free desktop recording / screencasting on windows

  - by Mercer Traieste

  I'm a newbie in desktop recording and screencasting. I didn't find a suitable free application to do all the things I want it to do, but I did enjoy using jing. I would expect such an application to have these features: choose the whole desktop, a region, a window to record zoom in an area, and camera move save the recorded movie to a compressed format have basic editing tools have the mouse highlighting feature (either a sonar blip or something similar) highlight window/field on the screen, any trick will do display pressed keys/key combinations (like iphone does) So the question is: Which free desktop recording/screencasting software would you recommend on windows? It doesn't have to have all those features, just tell me your favorable experiences. Please suggest tools that would do mouse/keys/areas highlight tricks. I'm open to commercial software too, but I would prefer a free one. Thank you!

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• Thin virtual host

  - by Adam Ryczkowski

  My work setup relies on old Windows XP. Now, when Windows XP isn't supported by new hardware, it's getting harder and harder to buy a notebook on which Windows XP can run natively with all essential hardware (wireless cards, graphics, sound etc). Since I don't expect my personal setup to turn away from Windows XP any time soon, I'm investigating the following trick: why not buy any decent hardware which Linux can fully utilize, and use it as a virtual host for a guest session with e.g. Windows XP. I like using hibernation, so I prefer this Linux to be as thin as possible, only enough to support VirtualBox, KVM or any other virtualization software. Question: Are there any "standard" ways to do this, like Linux distributions aimed specifically on being light virtualization host?

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• Can't restore HDD using multiple programs

  - by jonney

  Please refer to my original question about this issue. I tried GetDataBack and it doesn't seem to scan or do anything. I chose the default settings from the first screen and then on step 1 I chose my HDD that's damaged. In step 2, nothing happens. It doesn't scan or do anythong, and on step 3 it doesn't display any of my files. I have also tried TestDisk and what happens in TestDisk is that when I try to fix and rebuild the MFT, it says this: MFT and MFT mirror are bad. Failed to repair them. Here is the status of that HDD under Testdrive: I also tried this app and got no results when I tried to recover the files. I keep getting this error: Last but not least, I tried Recuva and that simply says it's unable to read the MFT. Any suggestions? I have tried various apps already and none of them seems to work.

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• Good place to start learning Adobe Illustrator CS5

  - by Kush

  The question may be off topic for SU, but I couldn't find any better place than this. I've been into designing for a while now, and have learned Photoshop by myself, and currently having fairly good grip in Photoshop CS5. Now due to rising needs, I need to learn Illustrator. I'm aware with the basics of Vector graphics, but haven't worked in designing such. So, suggest me a good place where I can learn Illustrator CS5, from ground up. I headed to Youtube for first start, but I still need an appropriate place where I get to learn it from better tutor. Thanks.

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• Security risk of JIRA standalone installation running JRE version 1.6.0_26 vs 1.6.0_29 (latest)

  - by kayaker243

  Atlassian recently introduced a standalone installer that installs JIRA, along with its own JRE. Unfortunately the JRE Atlassian bundles with this installer is 1.6.0_26, whereas the current version of the JRE is 1.6.0_29. This is potentially concerning given there were vulnerabilities in _26 that were fixed in the subsequent versions. We are currently using the bundled-installer version of JIRA and one contractor has recommended we ditch this for the system-installed JRE. My question is this: what is the actual security risk of continuing to use the _26 version of the JRE included in the bundled installer? There is no public access to our install of JIRA (only about 20 employees and contractors can login to our JIRA) and it's only accessible on a subdomain of a domain at which there's no publicly-available website. If there's a not insignificant risk inherent in sticking with the older JRE, why hasn't Atlassian upgraded the default JRE?

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• Securely wiping a file on a tmpfs

  - by Nanzikambe

  I have a script that decrypts some data to a tmpfs, the directory is secure (permissions), the machine's swap is encrypted (random key on boot) and when the script is done it does a 35 pass wipe (Peter Gutmann) of the cleartext on the tmpfs . I do this because I'm aware wiping files on a journaling file system is insecure, data may be recovered. For discussion, here're the relevant bits extracted: # make the tmpfs mkdir /mnt/tmpfs chmod 0700 /mnt/tmpfs mount -t tmpfs -o size=1M tmpfs /mnt/tmpfs cd /mnt/tmpfs # decrypt the data gpg -o - <crypted_input_file> | \ tar -xjpf - # do processing stuff # wipe contents find . -type f -exec bcwipe -I {} ';' # nuke the tmpfs cd .. umount -f /mnt/tmpfs rm -fR /mnt/tmpfs So, my question, assuming for the moment that nobody is able to read the cleartext in the tmpfs while it exists (I use umask to set cleartext to 0600), is there any way any trace of the cleartext could remain either in memory or on disk after the snippet above completes?

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• Apple XRaid questions

  - by luckytaxi

  I inherited an environment with a couple of apple xraid san. 1 - I have a 14 drive setup that's split into 5 LUNs on EACH side. The SAN goes into a fibre switch along w/ the servers that are attached to it. LUN masking is enabled on the SAN and as far as I know, there aren't any zoning on the fibre switch. Question, I have a server that's assigned two LUNs, one from each side of the controller. For some reason, it only sees one LUN (from the upper controller) and it doesn't see the one from the lower controller. The controller seems to be working fine as I have other servers attached to LUNs on the lower controller. 2 - I see a little "disclaimer" saying that any changes to the xraid will result in a reboot. So, if I add/remove hosts, this thing is going to reboot?!?!?!

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• Customizable mail server - what are my options? [closed]

  - by disappearedng

  This question was originally on SO but it was closed since it is considered off topic. I am interested to build a mail service that allows you to incorporate custom logic in the your mail server. For example, user A can reply to [email protected] once and subsequent emails from user A to [email protected] will not go through until certain actions are taken. I am looking for something simple and customizable, preferably open-sourced. I am fluent in most modern languages. What email servers do you guys recommend for this? Mailgun looks promising, but are there any simpler options?

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• Does using a single cable to connect two switches create a bottleneck?

  - by Nick

  I realise this may be a stupid question for some, but it's something I've always wondered about. Let's say we have two gigabit switches and all of the devices on the network are also gigabit. If 10 computers connected to switch A need to transfer large amounts of data to a server on Switch B (at the same time), is the maximum transfer speed of each connection limited by the bandwidth of the connection between the two switches? In other words, would each computer only be able to transfer at a speed of one gigabit divided by the 10 machines trying to use the "bridge" between switches? If so, are there any workarounds so that every device can use it's maximum speed from point to point?

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• ADExplorer, how to search with "distinguishedName contains" condition?

  - by Jimm Chen

  I'm using ADExplorer 1.42 from Microsoft. I'm not very versed at this program so please kindly help me out with a search-related problem. Right click on a node(e.g., CN=NlscanStaff) and select Search Container... , with default search attributes, I can see all objects inside NlscanStaff listed as result. Note that there is a CN=CHJTEST object listed. Now, my question is, how to search for CHJTEST specifically? I tried search condition: Attribute : distinguishedName Relation : contains Value : CN=CHJTEST Click Add , then Search . But no result. Can someone tell me what's going wrong? Thanks.

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• Changing memory allocator to Jemalloc Centos 6

  - by Brian Lovett

  After reading this blog post about the impact of memory allocators like jemalloc on highly threaded applications, I wanted to test things on a larger scale on some of our cluster of servers. We run sphinx, and apache using threads, and on 24 core machines. Installing jemalloc was simple enough. We are running Centos 6, so yum install jemalloc jemalloc-devel did the trick. My question is, how do we change everything on the system over to using jemalloc instead of the default malloc built into Centos. Research pointed me at this as a potential option: LD_PRELOAD=$LD_PRELOAD:/usr/lib64/libjemalloc.so.1 Would this be sufficient to get everything using jemalloc?

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• Problems installing Linux to IDE connected compact flash card

  - by mathematician1975

  I have been trying to install Ubuntu on some hardware (Netcom NC-499 board that contains a Vortex86DX processor). I am trying to install to a compact flash card attached to the board via an IDE adaptor, the aim being that the board will boot up and simply treat the compact flash like a normal hard drive. The processor vendor claims support for Ubuntu 10.04 but I am having problems installing it onto the card. I have been trying using a USB CD-ROM drive and the standard .iso image from the ubuntu site (md5 checksum works out fine so no problem there) but I have had no success at all. I have been able to do this with Ubuntu 8.04 but with no other version (9.04 and 10.04 desktop and alternative discs all fail). My question is what other options are available to me to try and install this? I have googled myself apart trying to find out but other than a few sites describing USB based installs using flash memory sticks for very specific hardware, I have found no useful info at all. Any suggestions will be gratefully received.

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• Adding many IP addresses to Windows Firewall using CLI fails partially

  - by Thomas

  I have a PowerShell script which adds IP addresses to Windows Firewall using the "netsh advfirewall" command. (As described in this question: How to append netsh firewall rules, not just replace). The problem is that when adding a lot of IP addresses (currently over 700) the string of IP addresses seems to be 'cut off' at some point. Only an X amount of the total amount of IP addresses are actually added to the firewall, the rest... not. The script is very simple, and looks something like this: $ip = "123.123.123.123,124.124.124.124,125.125.125.125 and so on" netsh advfirewall firewall set rule name="*" new remoteip="$ip" I tried to echo the string to see if it's cut off; echo $ip But the complete string is correctly echo'ed. Is there some kind of string length limit for the netsh command? Or anything else that could be causing this issue?

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