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• Where are ghostscript options / switches documented?

  - by sdaau

  I know there is a Ghostscript option, for instance -dPDFSETTINGS=/screen - where is that documented? How can I see what other options it accepts, appart from screen? Also, -dMaxSubsetPct=100 - what does it do? I open man gs, search for PDFSET, I get "Pattern not found". I type in a search engine, I get a myriad of personal webpages, no documentation hits. Can anyone help with a link? Many thanks in advance, Cheers! EDIT: also see this related post: Querying Ghostscript for the default options/settings of an output device (such as 'pdfwrite' or 'tiffg4') - Stack Overflow ... for getting a list of supported options for a given device.

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• Need to hookup HP dv7-3085dx with Nvidia GeForce GT 230M to my Dell 30 inch LCD 3007WFP at max resol

  - by user14660

  I recently bought an HP laptop (dv7-3085dx) (http://reviews.cnet.com/laptops/hp-pavilion-dv7-3085dx/4505-3121_7-33776108.html) which is supposed to have a pretty good video card (NVIDIA GeForce GT 230M). The card is supposed to output a max resolution of 2560x1600 which is also the max resolution of my monitor (http://www.ubergizmo.com/15/archives/2006/02/dell_3007wfp_on_dell_2001fp_action_8_megapixel_desktop.html). Now I bought an HDMI to dual link dvi (http://www.amazon.com/gp/product/B002KKLYDK/ref=oss_product) cable...this is after Best Buy's 70 dollar hdmi to dvi (perhaps it was 'single' link?) didn't give me the best resolution. In windows 7, when I try to set the max resolution for my 30 in monitor, I only get 1280x800...which is absurd. The monitor is great, I love the laptop and the video card supposedly supports such resolutions. So I can't figure out why I'm not getting better resolution (by the way, when i "detect" my monitor in windows 7, it is shown correctly as DELL 3007WFP!).

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• GSL Uniform Random Number Generator

  - by Jamaia

  I want to use GSL's uniform random number generator. On their website, they include this sample code: #include <stdio.h> #include <gsl/gsl_rng.h> int main (void) { const gsl_rng_type * T; gsl_rng * r; int i, n = 10; gsl_rng_env_setup(); T = gsl_rng_default; r = gsl_rng_alloc (T); for (i = 0; i < n; i++) { double u = gsl_rng_uniform (r); printf ("%.5f\n", u); } gsl_rng_free (r); return 0; } However, this does not rely on any seed and so, the same random numbers will be produced each time. They also specify the following: The generator itself can be changed using the environment variable GSL_RNG_TYPE. Here is the output of the program using a seed value of 123 and the multiple-recursive generator mrg, $ GSL_RNG_SEED=123 GSL_RNG_TYPE=mrg ./a.out But I don't understand how to implement this. Any ideas as to what modifications I can make to the above code to incorporate the seed?

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• Cannot use scp on Mac OS X

  - by Robert

  Hi all, when I try to copy any file with scp on Mac OS X Snow Leopard from another machine I get this error: scp [email protected]:/home/me/file.zip . Password: ... ---> Couldn't open /dev/null: Permission denied this is the output of "ls -l /dev/null": crw-rw-rw- 1 root wheel 3, 2 May 14 14:10 /dev/null I am in the group wheel, and even if I do "sudo scp..." it doesn't work. It's driving me crazy, do you have any suggestion? Thanx!

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• Sound in Ubuntu 12.10 on Chromebook

  - by Paul Mennega

  I've got an HP Chromebook 14 that I've rooted and installed Ubuntu via Crouton (upgraded to 12.10) and most things are working nicely. One issue that I am having trouble solving relates to sound. I've got sound output that I can control via the individual app (e.g. Youtube), but when trying to control the volume via the built-in xfce4-mixer, I get the following error: GStreamer was unable to detect any sound devices. Some sound system specific GStreamer packages may be missing. It may also be a permissions problem. Opening a terminal, I can run the alsamixer and control the volume levels. It is reporting back that the card is CRAS. I'd love to be able to do it from XFCE and the built-in mixer. I've tried re-installing the GStreamer packages, but no luck. It seems like I am close but not sure where to go from here. On a maybe unrelated note, plugging headphones into the headphone jack in Ubuntu also does not stop the sound from coming from the speakers and nothing comes through the headphones. Switching back to ChromeOs, everything works as expected, so I think that it's a driver issue.

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• What do encrypted files' data look like?

  - by Frost Shadow

  I know there are a lot of encryption programs available, that I would guess use different methods for encryption, and thus have different types of output files (.fve .tc .cha .dmg (bitlocker, truecrypt, challenger, ect.)), but if someone didn't know what the file was and just looked at the data, what would it look like? Does it just look like random bits, or can you still pick out a pattern? If it does look random, how is it if I moved the encrypted file to another computer, the other computer can tell it's a file, and is able to decrypt it (how would it even know where to start or stop, if it all looked random)? Also, how is the structure affected by encrypting files twice, using the same method, or a different one? Thanks for any help, and if you know any books or site about encryption for complete idiots, I'd appreciate it!

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• design a model for a system of dependent variables

  - by dbaseman

  I'm dealing with a modeling system (financial) that has dozens of variables. Some of the variables are independent, and function as inputs to the system; most of them are calculated from other variables (independent and calculated) in the system. What I'm looking for is a clean, elegant way to: define the function of each dependent variable in the system trigger a re-calculation, whenever a variable changes, of the variables that depend on it A naive way to do this would be to write a single class that implements INotifyPropertyChanged, and uses a massive case statement that lists out all the variable names x1, x2, ... xn on which others depend, and, whenever a variable xi changes, triggers a recalculation of each of that variable's dependencies. I feel that this naive approach is flawed, and that there must be a cleaner way. I started down the path of defining a CalculationManager<TModel> class, which would be used (in a simple example) something like as follows: public class Model : INotifyPropertyChanged { private CalculationManager<Model> _calculationManager = new CalculationManager<Model>(); // each setter triggers a "PropertyChanged" event public double? Height { get; set; } public double? Weight { get; set; } public double? BMI { get; set; } public Model() { _calculationManager.DefineDependency<double?>( forProperty: model => model.BMI, usingCalculation: (height, weight) => weight / Math.Pow(height, 2), withInputs: model => model.Height, model.Weight); } // INotifyPropertyChanged implementation here } I won't reproduce CalculationManager<TModel> here, but the basic idea is that it sets up a dependency map, listens for PropertyChanged events, and updates dependent properties as needed. I still feel that I'm missing something major here, and that this isn't the right approach: the (mis)use of INotifyPropertyChanged seems to me like a code smell the withInputs parameter is defined as params Expression<Func<TModel, T>>[] args, which means that the argument list of usingCalculation is not checked at compile time the argument list (weight, height) is redundantly defined in both usingCalculation and withInputs I am sure that this kind of system of dependent variables must be common in computational mathematics, physics, finance, and other fields. Does someone know of an established set of ideas that deal with what I'm grasping at here? Would this be a suitable application for a functional language like F#? Edit More context: The model currently exists in an Excel spreadsheet, and is being migrated to a C# application. It is run on-demand, and the variables can be modified by the user from the application's UI. Its purpose is to retrieve variables that the business is interested in, given current inputs from the markets, and model parameters set by the business.

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• VLC Ati Radeon 6870 Ubuntu 12.04 image skewed flicker

  - by Aaron

  I'm running Ubuntu 12.04 with ATI Radeon 6870 connected to my 40' Sharp TV. The video image is slightly jigged, like breaking a bit and slightly delayed. It just isn't smooth. The computer is very fast, like i7 with 12gb ram. I tried to run the same video with my mac laptop and on the tv with the same connection cable and it was running smoothly. i tried changing the video output in VLC to x11, increase caching, h264 skip loop filter to all, increase monitor refresh rate although it's already at 60 and it's an LCD tv. this is my xorg.conf : Section "ServerLayout" Identifier "amdcccle Layout" Screen 0 "amdcccle-Screen[3]-0" 0 0 EndSection Section "Module" Load "glx" EndSection Section "Monitor" Identifier "0-DFP9" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" Option "TargetRefresh" "60" Option "Position" "0 0" Option "Rotate" "normal" Option "Disable" "false" Option "PreferredMode" "1920x1080" EndSection Section "Monitor" Identifier "0-DFP10" Option "VendorName" "ATI Proprietary Driver" Option "ModelName" "Generic Autodetecting Monitor" Option "DPMS" "true" Option "PreferredMode" "1280x1024" Option "TargetRefresh" "60" Option "Position" "0 0" Option "Rotate" "normal" Option "Disable" "false" EndSection Section "Device" Identifier "amdcccle-Device[3]-0" Driver "fglrx" Option "Monitor-DFP9" "0-DFP9" BusID "PCI:3:0:0" EndSection Section "Screen" Identifier "Default Screen" DefaultDepth 24 EndSection Section "Screen" Identifier "amdcccle-Screen[3]-0" Device "amdcccle-Device[3]-0" DefaultDepth 24 SubSection "Display" Viewport 0 0 Depth 24 EndSubSection EndSection

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• nvidia twinview in ubuntu with large resolutions not working

  - by knittl

  i bought an external monitor and can't get it to work properly with my laptop screen. my laptop screen has a resolution of 1920x1200 and the new monitor has 1920x1080 when i open nvidia-settings and select the maximum resolution for each of the screen, one screen will always stay blank. if i select a smaller resolution for one of the two it will work. 1920x1200 + 1440x900 = works 1680x1050 + 1920x1080 = works 1920x1200 + 1920x1080 = doesn't work (but that's what i want to have!) my graphics card is an 01:00.0 VGA compatible controller: nVidia Corporation Quadro FX 360M (rev a1) (output from lspci), driver is proprietary nvidia driver, operating system is ubuntu. any help greatly apreciated

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• Where is php executable on Ubuntu?

  - by user601L

  I have installed apache and php. I know php works as I have tested a simple php file on apache server. I'm writing a simple webserver which should be able to process php files. So what I want to do is once I get a request for a php file, something like 'exec php test.php' and get the output and pass it to the client. As I'm not much into Ubuntu, I don't know where is the php executable (should be in \bin right?) to do it. But there is no php file inside \bin or \usr\bin. When I run 'which php' it shows nothing. How do I do this?

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• Higher resolutions unavailable with 2.6.38-8 kernel

  - by time-wastrel

  After upgrading to Natty and the 2.6.38-8 kernel I could no longer obtain the 1920x1080 resolution available in Maverick with 2.6.35-22. In fact the boot occasionally hung. However, after selecting the remaining 2.6.35-22 kernel, the high resolution was available. I then made the mistake of completely reinstalling, but could never get the higher resolutions with 2.6.38-8, no matter what I did. e.g. trying the nvidia proprietary driver, creating an xorg.conf. Even from the command line using xrandr --newmode "1920x1080_60.00" 173.00 1920 2048 2248 2576 1080 1083 1088 1120 -hsync +vsync xrandr --addmode DVI-I-1 1920x1080_60.00 xrandr --output DVI-I-1 --mode 1920x1080_60.00 all I would get would be a blank screen and the monitor reporting no input. (Low resolutions displayed fine with xrandr.) I could actually add the 1920x1080 to the already existing probe-reported resolutions in the pool of available resolutions, but choosing it would give the blank screen. In the end I installed the 2.6.35-22 kernel again. The high resolution is back. For a while there, staying up all night and trying many things, I thought that a new video board or monitor might be needed, but deep down, I knew that they were both OK. My question is - "Is this some bug involving the latest kernel, that will go away, or if this persists in future kernels, is there a way to make sure that I can keep my native resolution?"

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• Dynamic libraries are not allowed on iOS but what about this?

  - by tapirath

  I'm currently using LuaJIT and its FFI interface to call C functions from LUA scripts. What FFI does is to look at dynamic libraries' exported symbols and let the developer use it directly form LUA. Kind of like Python ctypes. Obviously using dynamic libraries is not permitted in iOS for security reasons. So in order to come up with a solution I found the following snippet. /* (c) 2012 +++ Filip Stoklas, aka FipS, http://www.4FipS.com +++ THIS CODE IS FREE - LICENSED UNDER THE MIT LICENSE ARTICLE URL: http://forums.4fips.com/viewtopic.php?f=3&t=589 */ extern "C" { #include <lua.h> #include <lualib.h> #include <lauxlib.h> } // extern "C" #include <cassert> // Please note that despite the fact that we build this code as a regular // executable (exe), we still use __declspec(dllexport) to export // symbols. Without doing that FFI wouldn't be able to locate them! extern "C" __declspec(dllexport) void __cdecl hello_from_lua(const char *msg) { printf("A message from LUA: %s\n", msg); } const char *lua_code = "local ffi = require('ffi') \n" "ffi.cdef[[ \n" "const char * hello_from_lua(const char *); \n" // matches the C prototype "]] \n" "ffi.C.hello_from_lua('Hello from LUA!') \n" // do actual C call ; int main() { lua_State *lua = luaL_newstate(); assert(lua); luaL_openlibs(lua); const int status = luaL_dostring(lua, lua_code); if(status) printf("Couldn't execute LUA code: %s\n", lua_tostring(lua, -1)); lua_close(lua); return 0; } // output: // A message from LUA: Hello from LUA! Basically, instead of using a dynamic library, the symbols are exported directly inside the executable file. The question is: is this permitted by Apple? Thanks.

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• Acceptable placement of the composition root using dependency injection and inversion of control containers

  - by Lumirris

  I've read in several sources including Mark Seemann's 'Ploeh' blog about how the appropriate placement of the composition root of an IoC container is as close as possible to the entry point of an application. In the .NET world, these applications seem to be commonly thought of as Web projects, WPF projects, console applications, things with a typical UI (read: not library projects). Is it really going against this sage advice to place the composition root at the entry point of a library project, when it represents the logical entry point of a group of library projects, and the client of a project group such as this is someone else's work, whose author can't or won't add the composition root to their project (a UI project or yet another library project, even)? I'm familiar with Ninject as an IoC container implementation, but I imagine many others work the same way in that they can scan for a module containing all the necessary binding configurations. This means I could put a binding module in its own library project to compile with my main library project's output, and if the client wanted to change the configuration (an unlikely scenario in my case), they could drop in a replacement dll to replace the library with the binding module. This seems to avoid the most common clients having to deal with dependency injection and composition roots at all, and would make for the cleanest API for the library project group. Yet this seems to fly in the face of conventional wisdom on the issue. Is it just that most of the advice out there makes the assumption that the developer has some coordination with the development of the UI project(s) as well, rather than my case, in which I'm just developing libraries for others to use?

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• Why does 'sort' ignore special characters, like the asterisk?

  - by Aaron Digulla

  I thought that sort would sort common prefixes together but that doesn't always happen. Take this input for example: AT0S*eightieths AT0S*eyetooth's AT*ad AT*Ad AT*AD AT*Eydie AT*eyed ATF*adv ATF*ATV ATF*edify ATF*Ediva ATFKT*advocate ATFKTNK*advocating ATFKT*outfought ATFKTS*advocates ATHT*whitehead ATHT*Whitehead AT*id AT*I'd AT*Ito AT*IUD ATJ*adage ATNXNS*attention's ATNXNS*attenuation's ATNXNS*autoignition's AT*oat AT*OD AT*outweigh AT*owed ATP0K*idiopathic ATP*adobe ATT*wighted ATT*witted ATT*wooded AT*UT AT*Uta AT*wowed AT*Wyatt ATX*atishoo After sort, I'd expect all the AT* to end up in one chunk but when you run this data through sort, the output == input. Why is that? I'm not specifying any option to ignore non-alphabetic characters or anything. Just sort dict > out. My version of sort comes from coreutils 8.5-1ubuntu3.

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• Too much free space on FreeNAS - ZFS

  - by Guillaume

  I have a FreeNAS server with 3 x 2 To disks in raidz1. I would expect to have about 4 To of space available. When I run zpool list I get: [root@freenas] ~# zpool list NAME SIZE USED AVAIL CAP HEALTH ALTROOT main_volume 5.44T 3.95T 1.49T 72% ONLINE /mnt I was expecting a size of 4 To. Also, used space as reported by zpool list does not match what's reported by du: [root@freenas] ~# du -sh /mnt/main_volume/ 2.6T /mnt/main_volume/ There are quite a few things that I dont yet completely understand about ZFS. But at the moment I am mostly worried that I misconfigured my system and that I dont have any storage redundancy. How can I make sure I did not do an horrible mistake ... For the sake of completeness, here is the output of zpool status: [root@freenas] ~# zpool status pool: main_volume state: ONLINE scrub: none requested config: NAME STATE READ WRITE CKSUM main_volume ONLINE 0 0 0 raidz1 ONLINE 0 0 0 gptid/d8584e45-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0 gptid/d8f7df30-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0 gptid/d9877cc3-5b8a-11d9-b9ea-5404a6630115 ONLINE 0 0 0 errors: No known data errors

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• Windows 7 connect to Lion file sharing

  - by McKvack

  Trying to access my Mac from a Windows 7 computer, I fail with the infamous error 86 incorrect password. Now this appears to be a well-known problem with countless threads on the internet giving as many "solutions" as there are discussion threads about it (mostly ranging from installing third-party commercial samba servers, to switching to some other protocol, to compiling a plain-vanilla Samba installation - the latter which I will probably do when I give up this :) ) I am stubborn, and I believe there must be some problem here that can be solved or worked around, but there is surprisingly little detail about this problem. It appears to have something to do with a mismatch of authentication methods. Trying to run samba in debug mode: sudo /usr/sbin/smbd -debug -stdout gets me this output when trying to access it from Win 7 ... smb1_dispatch_one [smb_dispatch.cpp:377] dispatching SMB_COM_SESSION_SETUP_ANDX smb1_dispatch_session_setup [session_setup.cpp:261] FIXME erase existing sessions log_gss_error [gssapi_mechanism.cpp:97] gssapi: gss-code: Miscellaneous failure (see text) log_gss_error [gssapi_mechanism.cpp:113] gssapi: mech-code: unknown mech-code 22 for mech unknown What is the problem here, and how do I fix it?

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• Ubuntu PowerEdge T110

  - by Josh

  I just got a Dell PowerEdge T110 server. I moved the boot order to CD - HDD - NIC, then installed Ubuntu 10.10, Desktop Ed. I chose install alongside other OS (even though there was none), then chose use entire partition. It showed that Ubuntu would use 160 of the 160 available GB. It installed, updated (while installing), then said, need to eject and restart, as usual. It restarted, but to a blank screen. No output whatsoever. Not even BIOS. Just blank. The monitor isn't even woken from sleep. Power cycled, still doing it. Tested the monitor with a laptop, and it is fine. What on earth is going on here?

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• Debian 5 is randomly shutting down.

  - by revofreak

  My debian 5 vps is suffering from random shutdowns. I reinstalled it several times, the hosts moved me to a different physical box, check the install image and said everyone else also uses it and is fine. Heres the output from syslog Mar 27 00:19:19 noobintraining-1 -- MARK -- Mar 27 00:32:01 noobintraining-1 shutdown[18142]: shutting down for system halt Mar 27 00:32:06 noobintraining-1 init: Switching to runlevel: 0 Mar 27 00:32:06 noobintraining-1 xinetd[15907]: Exiting... Mar 27 00:32:07 noobintraining-1 named[15865]: received control channel command 'stop -p' Mar 27 00:32:07 noobintraining-1 named[15865]: shutting down: flushing changes Mar 27 00:32:07 noobintraining-1 named[15865]: stopping command channel on 127.0.0.1#953 Mar 27 00:32:07 noobintraining-1 named[15865]: stopping command channel on ::1#953 Mar 27 00:32:07 noobintraining-1 named[15865]: no longer listening on ::#53 Mar 27 00:32:07 noobintraining-1 named[15865]: no longer listening on 127.0.0.1#53 Mar 27 00:32:07 noobintraining-1 named[15865]: no longer listening on 89.238.172.132#53 Mar 27 00:32:07 noobintraining-1 named[15865]: exiting Mar 27 00:32:07 noobintraining-1 exiting on signal 15 Any help is most appreciated!

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• How to retain secondary hard drive mounts at reboot and keep shares?

  - by Tom

  I'm running Ubuntu 12.04. A second hard drive connected to this computer does not mount when the computer boots. Additionally, I have set up the drive to be shared but the share is not retained, the share is lost after each boot. My main system drive and a removable drive mount OK and shares remain between boots. Additional information follows: D2Linux sda1 is the secondary hard drive L-Freeagent sdc1 is the removeable drive Here is the contents of fstab immediately after booting (D2Linux /dev/sda1 not yet mounted): '# /etc/fstab: static file system information. ' '# ' '# Use 'blkid' to print the universally unique identifier for a ' '# device; this may be used with UUID= as a more robust way to name devices ' '# that works even if disks are added and removed. See fstab(5). ' '# ' '# ' proc /proc proc nodev,noexec,nosuid 0 0 '# / was on /dev/sdb1 during installation ' UUID=43d29a82-66b3-40f3-91ed-735a27a60004 / ext4 errors=remount-ro 0 1 '# swap was on /dev/sdb5 during installation UUID=cf8e3351-11d0-487a-8a6e-e499c2e88a10 none swap sw ' 0 0 Here is the output of mount with all drives mounted (I did not restore the share): /dev/sdb1 on / type ext4 (rw,errors=remount-ro) proc on /proc type proc (rw,noexec,nosuid,nodev) sysfs on /sys type sysfs (rw,noexec,nosuid,nodev) none on /sys/fs/fuse/connections type fusectl (rw) none on /sys/kernel/debug type debugfs (rw) none on /sys/kernel/security type securityfs (rw) udev on /dev type devtmpfs (rw,mode=0755) devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620) tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755) none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880) none on /run/shm type tmpfs (rw,nosuid,nodev) gvfs-fuse-daemon on /home/tom/.gvfs type fuse.gvfs-fuse-daemon (rw,nosuid,nodev,user=tom) /dev/sdc1 on /media/L-Freeagent type ext4 (rw,nosuid,nodev,uhelper=udisks) /dev/sda1 on /media/D2Linux type ext4 (rw,nosuid,nodev,uhelper=udisks) Thank you!

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• Design pattern to handle queries using multiple models

  - by coderkane

  I am presented with a dilemma while trying to re-designing the class structure for my PHP/MySQL application to make it more elegant and conform it to the SOLID principle. The problem goes like this: Let as assume, there is an abstract class called person which has certain properties to define a generic person, such as name, age, date of birth etc. There are two classes, student, and teacher, that implements this abstract class. They add their own unique properties to it. I have designed all the three classes to include all the operational logic (details of which are not relevant in context of the question). Now, I need to create views/reports/data grids which contain details from multiple classes, for example, say, a list of all students doing projects in Chemistry mentored by a teacher whose name is the parameter to the query. This is just one example of a view, there are many different views in the application, which uses data from 3-4 tables, and each of them have multiple input parameters to generate them. Considering this particular example, I have written the relevant query using JOIN and the results are as expected and proper, now here is the dilemma: Keeping in mind the single responsibility principle, where should I keep this query? It does not belong to either Student class, or Teacher class or any other classes currently present. a) Should I create a new class, say dataView class, and design it as a MVC pattern and keep the query there? What about the other views? how do they fit in this architecture? b) Should I not keep the query in code at all, and make it DB View ? c) Am I completely wrong in the approach? If so what is the right approach? My considerations are as follows: a) should be easy to add new views later on if requirement comes, without having to copy-paste-modify code b) would like to make it as loosely coupled as possible so that if minor db structure changes happen, it does not break I did google searches on report design and OOP report generators, but all the result seem to focus on the visual design of the report rather than fetching the data. I have already taken care of the visual aspect of the report using MVC with html templates. I am sure this is a very fundamental problem with known solution, but I am somehow not able to find it (maybe searching with wrong keyword). Edit1: Modified the title to make it more relevant Edit2: The accepted answer got me thinking in the right direction and identify my design flaws, which eventually led me to find this question and the solution in Stack Overflow which gave me the detailed answer to clear the confusion.

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• How to parse pipe with multiple commands independently?

  - by yarun can

  How can I parse output of a single command by multiple commands without truncating at each step? For example ls -al|grep -i something will pass every line that has "something" in it to the next pipe which is fine, but that also means every other line in the pipe is discarded since there wont be matching the condition. What I want is to be able to operate on single pipe by many commands independently. In this case it a pipe from Mutt which passes the whole message body. I want to get grep, sed, delete and assign each of these to bash variables maybe. Initially what I want is to be able to assign "message id" to a variable, "subject" to another variable etc Then pass those into proper commands arguments. Here is how it will be MessageBodyFromMutt|grep something -Ax -Bx |grep another thing from the original message| sed some stuff from the original message| cut from here to there Obviously the above line does not do what I want. I want all these commands to operate on the original message body. I hope it makes sense

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• Disable static content caching in IIS 7

  - by Lee Richardson

  I'm a developer having what should be a relatively simple problem in IIS 7 on Windows Server 2008 R2. The problem is that IIS 7 is overzealously caching all static content on the server. It's caching all .html and .js content and not noticing when the content changes on disk unless I iisreset. I've tried the following: Deleting the local cache in my browser (I'm 99% positive this is a server caching issue) In IIS Admin in OutputCaching adding an .html extension and unchecking "User mode caching" and unchecking "Kernel-mode caching" In IIS Admin in OutputCaching adding an .html extension and checking "User mode caching" and selecting the radio for "Prevent all caching" In IIS Admin editing Output Cache Feature settings and unchecking "Enable cache" and "Enable kernel cache under OutputCaching. Running "C:\Windows\System32\inetsrv\config\appcmd set config "SharePoint - 80" -section: system.webServer/caching -enabled:false" Looking through applicationHost.config and disabling anything related to caching I could find. Nothing seems to work. I'm getting very frustrated. Can anyone please help?

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• Memory is free, but still swapping?

  - by japancheese

  Hello, I'm sure this is a pretty basic question, but I'm just trying to get a grasp of what's going on with my Ubuntu (Hardy Herron) server (running a Rails-based site). It seems that I have free memory available, yet the system is reporting that it is still swapping memory (unless I'm reading this incorrectly?). Here is the "free -m" output total used free shared buffers cached Mem: 1024 905 118 0 33 409 -/+ buffers/cache: 462 561 Swap: 2047 95 1952 Could anyone explain to me some possible reasons that it is maintaining 95mb of swap at all times (it is never less)? I'm just looking for some leads on things I could check out that would explain to me exactly how memory is utilized in Linux.

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• Changing the RSS and Dynamic Views layout when using Blogger as a Podcast index

  - by Stuart

  I'm trying to set up a podcast service at present. This is just a 'spare time' task - so I wanted a quick, easy way to do it. To get this working: I've ripped (with owner permission) some YouTube content across to MP3 and hosted this content on Azure Blob Storage. I've posted blog posts - with linked mp3 content - inside a Blogger website. I've registered the RSS feed with iTunes This all seems to be working OK - http://dotnetmobilepodcast.blogspot.co.uk/ However, when it comes to a couple of final touches, then I'm hitting problems. RSS I would like to add iTunes metadata to the RSS feed. However, I can't find any way to do this inside the Blogger system. To workaround this I've tried using FeedBurner with its StreamCast plugin. However, the output from FeedBurner doesn't seem to be accepted by iTunes - e.g. http://feeds.feedburner.com/MobileAppCSharpPodcasts leads to this very unhelpful 11111 message: Is there any other way I can get this iTunes metadata content into the Blogger RSS feed - e.g. maybe an alternative service or a Yahoo! Pipe? Showing the MP3 files in the Blog I'm trying to work out how to automatically display the linked enclosures inside the blog posts - do the blogger Dynamic Views don't seem to have any way of doing this? I've found the HTML in those views very difficult to follow. If necessary I can workaround this using manual entries into each blog post... but I'd prefer to do this programatically if I can.

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• how to limit upload bandwidth per user in linux?

  - by Gihan Lasita

  Can anyone provide the tc command to limit upload bandwidth per user in Debian Lenny? I found that to mark packets per user with iptables I can use the following command iptables -t mangle -A OUTPUT -p tcp -m owner --uid-owner testuser -j MARK --set-mark 500 but I have no idea how to use tc update by running following commands, i managed to limit testuser upload bandwidth to 10Mbit iptables -t mangle -N HTB_OUT iptables -t mangle -I POSTROUTING -j HTB_OUT iptables -t mangle -A HTB_OUT -j MARK --set-mark 30 iptables -t mangle -A HTB_OUT -m owner --uid-owner testuser -j MARK --set-mark 10 tc qdisc replace dev eth0 root handle 1: htb default 30 tc class replace dev eth0 parent 1: classid 1:1 htb rate 10Mbit burst 5k tc class replace dev eth0 parent 1:1 classid 1:10 htb rate 10Mbit ceil 10Mbit tc qdisc replace dev eth0 parent 1:10 handle 10: sfq perturb 10 tc filter add dev eth0 parent 1:0 prio 0 protocol ip handle 10 fw flowid 1:10 now the problem is, i do not want to limit testuser's FTP bandwidth but by running above commands FTP speed also limited to 10Mbit. Regards

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