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• Configure Postfix to Port other than 25

  - by bwheeler96

  I've done quite a bit of googling on how to reconfigure postfix to work on a different port, but I still can't fond the line(s) people keep talking about in my master.cf. I'm using OS X Mountain Lion, and my ISP blocks traffic both ways on port 25. people have said to look for a line that says smtp inet n - n - - smtpd I can't find it. This is (what I believe to be) unmodified # ==== Begin auto-generated section ======================================== # This section of the master.cf file is auto-generated by the Server Admin # Mail backend plugin whenever mails settings are modified. smtp inet n - n - 1 postscreen smtpd pass - - n - - smtpd dnsblog unix - - n - 0 dnsblog tlsproxy unix - - n - 0 tlsproxy submission inet n - n - - smtpd -o smtpd_tls_security_level=encrypt smtp unix - - n - - smtp # === End auto-generated section =========================================== # Modern SMTP clients communicate securely over port 25 using the STARTTLS command. # Some older clients, such as Outlook 2000 and its predecessors, do not properly # support this command and instead assume a preconfigured secure connection # on port 465. This was sometimes called "smtps", but such usage was never # approved by the IANA and therefore conflicts with another, legitimate assignment. # For more details about managing secure SMTP connections with postfix, please see: # http://www.postfix.org/TLS_README.html # To read more about configuring secure connections with Outlook 2000, please read: # http://support.microsoft.com/default.aspx?scid=kb;en-us;Q307772 # Apple does not support the use of port 465 for this purpose. # After determining that connecting clients do require this behavior, you may choose # to manually enable support for these older clients by uncommenting the following # four lines. #465 inet n - n - - smtpd # -o smtpd_tls_wrappermode=yes # -o smtpd_sasl_auth_enable=yes # -o smtpd_client_restrictions=permit_sasl_authenticated,reject # -o milter_macro_daemon_name=ORIGINATING #628 inet n - n - - smtp pickup fifo n - n 60 1 pickup cleanup unix n - n - 0 cleanup qmgr fifo n - n 300 1 qmgr #qmgr fifo n - n 300 1 oqmgr tlsmgr unix - - n 1000? 1 tlsmgr rewrite unix - - n - - trivial-rewrite bounce unix - - n - 0 bounce defer unix - - n - 0 bounce trace unix - - n - 0 bounce verify unix - - n - 1 verify sacl-cache unix - - n - 1 sacl-cache flush unix n - n 1000? 0 flush proxymap unix - - n - - proxymap proxywrite unix - - n - 1 proxymap # When relaying mail as backup MX, disable fallback_relay to avoid MX loops relay unix - - n - - smtp -o smtp_fallback_relay= # -o smtp_helo_timeout=5 -o smtp_connect_timeout=5 showq unix n - n - - showq error unix - - n - - error retry unix - - n - - error discard unix - - n - - discard local unix - n n - - local virtual unix - n n - - virtual lmtp unix - - n - - lmtp anvil unix - - n - 1 anvil scache unix - - n - 1 scache # # ==================================================================== # Interfaces to non-Postfix software. Be sure to examine the manual # pages of the non-Postfix software to find out what options it wants.

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• Does anyone really understand how HFSC scheduling in Linux/BSD works?

  - by Mecki

  I read the original SIGCOMM '97 PostScript paper about HFSC, it is very technically, but I understand the basic concept. Instead of giving a linear service curve (as with pretty much every other scheduling algorithm), you can specify a convex or concave service curve and thus it is possible to decouple bandwidth and delay. However, even though this paper mentions to kind of scheduling algorithms being used (real-time and link-share), it always only mentions ONE curve per scheduling class (the decoupling is done by specifying this curve, only one curve is needed for that). Now HFSC has been implemented for BSD (OpenBSD, FreeBSD, etc.) using the ALTQ scheduling framework and it has been implemented Linux using the TC scheduling framework (part of iproute2). Both implementations added two additional service curves, that were NOT in the original paper! A real-time service curve and an upper-limit service curve. Again, please note that the original paper mentions two scheduling algorithms (real-time and link-share), but in that paper both work with one single service curve. There never have been two independent service curves for either one as you currently find in BSD and Linux. Even worse, some version of ALTQ seems to add an additional queue priority to HSFC (there is no such thing as priority in the original paper either). I found several BSD HowTo's mentioning this priority setting (even though the man page of the latest ALTQ release knows no such parameter for HSFC, so officially it does not even exist). This all makes the HFSC scheduling even more complex than the algorithm described in the original paper and there are tons of tutorials on the Internet that often contradict each other, one claiming the opposite of the other one. This is probably the main reason why nobody really seems to understand how HFSC scheduling really works. Before I can ask my questions, we need a sample setup of some kind. I'll use a very simple one as seen in the image below: Here are some questions I cannot answer because the tutorials contradict each other: What for do I need a real-time curve at all? Assuming A1, A2, B1, B2 are all 128 kbit/s link-share (no real-time curve for either one), then each of those will get 128 kbit/s if the root has 512 kbit/s to distribute (and A and B are both 256 kbit/s of course), right? Why would I additionally give A1 and B1 a real-time curve with 128 kbit/s? What would this be good for? To give those two a higher priority? According to original paper I can give them a higher priority by using a curve, that's what HFSC is all about after all. By giving both classes a curve of [256kbit/s 20ms 128kbit/s] both have twice the priority than A2 and B2 automatically (still only getting 128 kbit/s on average) Does the real-time bandwidth count towards the link-share bandwidth? E.g. if A1 and B1 both only have 64kbit/s real-time and 64kbit/s link-share bandwidth, does that mean once they are served 64kbit/s via real-time, their link-share requirement is satisfied as well (they might get excess bandwidth, but lets ignore that for a second) or does that mean they get another 64 kbit/s via link-share? So does each class has a bandwidth "requirement" of real-time plus link-share? Or does a class only have a higher requirement than the real-time curve if the link-share curve is higher than the real-time curve (current link-share requirement equals specified link-share requirement minus real-time bandwidth already provided to this class)? Is upper limit curve applied to real-time as well, only to link-share, or maybe to both? Some tutorials say one way, some say the other way. Some even claim upper-limit is the maximum for real-time bandwidth + link-share bandwidth? What is the truth? Assuming A2 and B2 are both 128 kbit/s, does it make any difference if A1 and B1 are 128 kbit/s link-share only, or 64 kbit/s real-time and 128 kbit/s link-share, and if so, what difference? If I use the seperate real-time curve to increase priorities of classes, why would I need "curves" at all? Why is not real-time a flat value and link-share also a flat value? Why are both curves? The need for curves is clear in the original paper, because there is only one attribute of that kind per class. But now, having three attributes (real-time, link-share, and upper-limit) what for do I still need curves on each one? Why would I want the curves shape (not average bandwidth, but their slopes) to be different for real-time and link-share traffic? According to the little documentation available, real-time curve values are totally ignored for inner classes (class A and B), they are only applied to leaf classes (A1, A2, B1, B2). If that is true, why does the ALTQ HFSC sample configuration (search for 3.3 Sample configuration) set real-time curves on inner classes and claims that those set the guaranteed rate of those inner classes? Isn't that completely pointless? (note: pshare sets the link-share curve in ALTQ and grate the real-time curve; you can see this in the paragraph above the sample configuration). Some tutorials say the sum of all real-time curves may not be higher than 80% of the line speed, others say it must not be higher than 70% of the line speed. Which one is right or are they maybe both wrong? One tutorial said you shall forget all the theory. No matter how things really work (schedulers and bandwidth distribution), imagine the three curves according to the following "simplified mind model": real-time is the guaranteed bandwidth that this class will always get. link-share is the bandwidth that this class wants to become fully satisfied, but satisfaction cannot be guaranteed. In case there is excess bandwidth, the class might even get offered more bandwidth than necessary to become satisfied, but it may never use more than upper-limit says. For all this to work, the sum of all real-time bandwidths may not be above xx% of the line speed (see question above, the percentage varies). Question: Is this more or less accurate or a total misunderstanding of HSFC? And if assumption above is really accurate, where is prioritization in that model? E.g. every class might have a real-time bandwidth (guaranteed), a link-share bandwidth (not guaranteed) and an maybe an upper-limit, but still some classes have higher priority needs than other classes. In that case I must still prioritize somehow, even among real-time traffic of those classes. Would I prioritize by the slope of the curves? And if so, which curve? The real-time curve? The link-share curve? The upper-limit curve? All of them? Would I give all of them the same slope or each a different one and how to find out the right slope? I still haven't lost hope that there exists at least a hand full of people in this world that really understood HFSC and are able to answer all these questions accurately. And doing so without contradicting each other in the answers would be really nice ;-)

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• Package visible in Synaptic but not in aptitude?

  - by sleepycat

  I can see libfreeimage3-dev in synaptic and have installed it from there, but what is it that I can't see it from the command line? I tried sudo aptitude update... mike@sleepycat:~$ sudo aptitude search '~n.*freeimage3.*' i libfreeimage3 - Support library for graphics image formats p libfreeimage3-dbg - Support library for graphics image formats Any ideas?

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• Ubuntu: Convert OpenOffice Calc to Excel workbook using CLI

  - by Adam Matan

  I need to create an automated report in a spreadsheet format. Unfortunately, There seems to be an easy way to create these reports using OpenOffice Calc, but upper managements wants them in MS Excel format. As these reports are to be created and emailed automatically, is there a nice, command-line way to convert between these file formats?

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• How to push configurations to multiple Cisco Switches

  - by nixda

  Assume I have around 50 Cisco IE2000 Switches connected together and I want to reconfigure some settings, the same settings for every switch. Normally I would open a command line session via Putty and paste the commands. But as the number of switches is growing, even this method takes its time. I am aware of Kiwi CatTools. Unfortunately it's not free so I'm wondering if there are other efficient ways to configure a large number of Cisco switches.

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• Vector math, finding coördinates on a planar between 2 vectors

  - by Will Kru

  I am trying to generate a 3d tube along a spline. I have the coördinates of the spline (x1,y1,z1 - x2,y2,z2 - etc) which you can see in the illustration in yellow. At those points I need to generate circles, whose vertices are to be connected at a later stadium. The circles need to be perpendicular to the 'corners' of two line segments of the spline to form a correct tube. Note that the segments are kept low for illustration purpose. [apparently I'm not allowed to post images so please view the image at this link] http://img191.imageshack.us/img191/6863/18720019.jpg I am as far as being able to calculate the vertices of each ring at each point of the spline, but they are all on the same planar ie same angled. I need them to be rotated according to their 'legs' (which A & B are to C for instance). I've been thinking this over and thought of the following: two line segments can be seen as 2 vectors (in illustration A & B) the corner (in illustraton C) is where a ring of vertices need to be calculated I need to find the planar on which all of the vertices will reside I then can use this planar (=vector?) to calculate new vectors from the center point, which is C and find their x,y,z using radius * sin and cos However, I'm really confused on the math part of this. I read about the dot product but that returns a scalar which I don't know how to apply in this case. Can someone point me into the right direction? [edit] To give a bit more info on the situation: I need to construct a buffer of floats, which -in groups of 3- describe vertex positions and will be connected by OpenGL ES, given another buffer with indices to form polygons. To give shape to the tube, I first created an array of floats, which -in groups of 3- describe control points in 3d space. Then along with a variable for segment density, I pass these control points to a function that uses these control points to create a CatmullRom spline and returns this in the form of another array of floats which -again in groups of 3- describe vertices of the catmull rom spline. On each of these vertices, I want to create a ring of vertices which also can differ in density (amount of smoothness / vertices per ring). All former vertices (control points and those that describe the catmull rom spline) are discarded. Only the vertices that form the tube rings will be passed to OpenGL, which in turn will connect those to form the final tube. I am as far as being able to create the catmullrom spline, and create rings at the position of its vertices, however, they are all on a planars that are in the same angle, instead of following the splines path. [/edit] Thanks!

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• What package do install to get access to "psql" client on windows

  - by fmark

  What package do install to get access to "psql" client on windows xp? I don't want to install a server, only the command-line client, and maybe pg_dump and co. I am connecting to Postgresql 8.4 server.

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• connecting two routers

  - by lee

  I have two routers, both wireless, that i wish to connect together. As it stands Router A is connected via a micro filter into the phone line which i access the web wirelessly. What I want to achieve is to connect Router B to A so I can hardwire My TV and Sky (cable) Box into B and simultaneously browse the web wirelessly via router A. Is this possible? If so I'd appreciate the help on this one to save me running 50ft cable under the carpet!!! PS I'm using Mac OS.

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• stsadm crash after sps07 to sps10 upgrade

  - by elhombre

  Hi all I have made an upgrade from sps07 to sps10 and I am trying now to make backups of sps10 using the command stsadm -o backup -directory c:\backup -backupmethod full The problem that Occurs is that stsadm crashes when trying todo the backup. Even worse is that when I try just to start stsadm from the command line I get following error. Unhanded exception: System.MissingMethodException: Methode not found: "Void Microsoft.SharePoint.SPRequestManager.Dispose()".at Microsoft.SharePoint.StsAdmin.SPStsAdmin.Main(String[] args) Holy moly what is happening?!

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• Mac: Which Quicksilver-style fuzzy matching app can be used as a universal selection GUI for custom

  - by Kay Sarraute

  I want to pass a bunch of text strings via AppleScript or the command line to the app which should then, after prompting the user, return the selected item. Quicksilver and Launchbar only seem to work on internally catalogued items or directory contents. Are there alternative apps that accept custom items?

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• Apache Simple Configuration Issue: Setting up per-user directory permission denied problem

  - by Huckphin

  Hello. I am just getting Apache 2.2 running on Fedora 13 Beta 64-bit. I am running into issues setting my per-user directory. The goal is to make localhost/~user map to /home/~user/public_html. I think that I have the permissions right because I have 755 to /home/~user, and I have 755 to /home/~user/public_html/ and I have 777 for all contents inside of /home/~user/public_html/ recursively set. My mod_userdir configuration looks like this: <IfModule mod_userdir.c> # # UserDir is disabled by default since it can confirm the presence # of a username on the system (depending on home directory # permissions). # UserDir disabled root UserDir enabled huckphin # # To enable requests to /~user/ to serve the user's public_html # directory, remove the "UserDir disabled" line above, and uncomment # the following line instead: # UserDir public_html The error that I am seeing in the error log is this: [Sat May 15 09:54:29 2010] [error] [client 127.0.0.1] (13)Permission denied: access to /~huckphin/index.html denied When I login as the apache user, I know that /~huckphin does not exist, and this is not what I want. I want it to be accessing ~huckphin, not /~huckphin. What do I need to change on my configuration for this to work? [Added after comments] Hi Andol, thank you for your suggestions. So, first off, you said that you assume that I have the userdir module enabled, but I am not sure what that means exactly. That could be part of the problem. I do have the Module loaded, using the LoadModule directive. I have this: LoadModule userdir_module modules/mod_userdir.so I also did a find on where mod_userdir is, and I found it located here: [huckphin@crhyner-workbox]/% find / . -name '*mod_userdir.so*' 2> /dev/null /usr/lib64/lighttpd/mod_userdir.so /usr/lib64/httpd/modules/mod_userdir.so Is there something else I need to enable? Also, my directory configuration was mentioned. I have uncommented the default configuration given. I have not looked into what all of the configurations mean, and this could probably explain the issue. Here is the Directory that I have for the user directories: <Directory "/home/*/public_html"> AllowOverride FileInfo AuthConfig Limit Options MultiViews Indexes SymLinksIfOwnerMatch IncludesNoExec <Limit GET POST OPTIONS> Order allow,deny Allow from all </Limit> <LimitExcept GET POST OPTIONS> Order deny,allow Deny from all </LimitExcept> </Directory>

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• Create an AWS HVM Linux AMI from an Existing Paravirtual Linux AMI

  - by javacavaj

  Is it possible to create a hardware virtual machine (HVM) AMI from an existing paravirtual (PV) AMI. My initially thought was to start a new PV instance and use the ec2-create-image command to create a new image while specifying HVM as the virutalization type. However, ec2-create-image does not have a command line parameter to specify the virtualization type. Is there another way to go about doing this?

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• Rotate a 3gp video file 90 degrees using ubuntu and free tools

  - by justinhj

  I want to use ubuntu and preferably standard packages such as ffmpeg to rotate a 3gp video by 90 degrees in any direction. Preferably a command line or python script.

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• Cannot kill firefox in OSX 10.6

  - by lydonchandra

  I tried killing Firefox 3.5 from OSX command line using "kill -9 pid", and the process was still running mini-2:~ prompt$ ps -ef | grep firefox 501 15087 183 0 0:00.00 ?? 0:00.00 (firefox-bin) After this, I could not start firefox (as it said Firefox is already running) nor can I kill firefox (again). What is going on? How can I fix this (besides logging of or restarting my machine) ?

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• 0x0000007b vista harddrive swap

  - by unknown (google)

  I swap my hard drive to a new computer with vista 32 I get 0x0000007b stop error on bootup I tried using the cd to do the repair but it fails. I think it is because I have the wrong hard drive driver install for vista or it is missing. How can I fix this from the command line

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• After Effects CS4: Using layer markers.

  - by GuruAbyss

  I have a question regarding Layer Markers in AE. What I'm trying to do is have a layer start off normal then in the time line I'll place a marker and have it change its color using Effect Color correction Change color to. The hue will change from 0% to 50% for 10 frames then turn back to normal. How would I go about doing this?

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• SQL Server 2008 R2 upgrade fails on upgrade rule check

  - by Tim

  I'm trying to upgrade an evaluation instance of SQL Server 2008 to a fully licensed instance of SQL Server 2008 R2. I made it most of the way through the installer, but I'm getting stopped at the Upgrade Rules page - the SQL Server Analysis Services Upgrade Service Functional Check is failing. The specific error I get: Rule "SQL Server Analysis Services Upgrade Service Functional Check" failed. The current instance of the SQL Server Analysis Services service cannot be upgraded because the Analysis Services service is disabled or not online. Please start the service and then run the upgrade rules check again. Simple enough - just need to start the service. Here's where it gets troublesome. When I open Services and go to start the SQL Server Analysis Services (MSSQLSERVER) service, it provides me the following message: The SQL Server Analysis Services (MSSQLSERVER) service on Local Computer started and then stopped. Some services stop automatically if they are not in use by other services or programs. Trying from the command line as Administrator yields: PS C:\Windows\System32 net start MSSQLServerOLAPService The SQL Server Analysis Services (MSSQLSERVER) service is starting... The SQL Server Analysis Services (MSSQLSERVER) service could not be started. The service did not report an error. More help is available by typing NET HELPMSG 3534. I've tried changing the logon setting of this service to Administrator, a user with admin privileges, and both the Local System and Network Service accounts - nothing works. In addition, when I look at the service through the SQL Server Configuration Manager (also run as Administrator), attempting to change the logon setting for the service results in the message: The server threw an exception. [0x80010105] I have no need for analysis services themselves - all I need is for this one service to be running long enough to do the R2 upgrade, then it can shut down again. Any thoughts on how to get the Analysis Services service running? Update: Checking the event log, I found an error logged to the Application log from the MSSQLServerOLAPService. It has event ID 0, task category (289), and says: The service cannot be started: XML parsing failed at line 1, column 4: Unrecognized input signature.

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• NGiNX + PHP5-fpm + CDN Tools (plugin)

  - by chris hough

  I am trying to activate the CDN tools plugin and I keep getting the following error: Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 30720 bytes) in /srv/www/www.triathleteskitchen.com/wp-content/plugins/cdn-tools/cdn_classes/cloudfiles/cloudfiles_http.php on line 252 After extensive research on this issue in which I updated both of the following settings: max_execution_time = 300 memory_limit = 128M and verified the settings are active by setting up a dump phpinfo() page. Still no luck /cry I am curious if any php geeks better than me have any ideas or can point me in the right direction. Happy Holidays to you and your families :)

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• Dynamic Disk Start on Boot

  - by Xiuhtecuhtli

  Is there a way to make a Dynamic Disc Automatically Come on line after a reboot. at the moment i must manually Bring the disk "online". I was thinking a Startup Script would do the trick. does anyone know of a URL HOWTO or a Premade script to do this?

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• \G like vertical output in MySQL Workbench for show engine innodb status

  - by KCD

  show engine innodb status; is unusable in MySQL Workbench, as shown here: =====================================120329 12:39:32 INNODB MONITOR OUTPUT=====================================Per second averages calculated from the last 17 seconds-----------------BACKGROUND THREAD-----------------srv_master_thread loops: 192438... However show engine innodb status \G is great on the mysql command line client. Is there any \G equivalent on MySQL workbench or better way to get this information?

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• Why does PSEXEC work if I don't specify a password?

  - by Kev

  When I run PSEXEC to launch a process on a remote machine, if I specify the password in the command line it fails with: PsExec could not start cmd.exe on web1928: Logon failure: unknown user name or bad password. psexec \\web1928 -u remoteexec -p mypassword "cmd.exe" If I just specify: psexec \\web1928 -u remoteexec "cmd.exe" and type in the password it works just fine. The originating server is Windows 2003 and the remote server is Windows 2008 SP2.

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• devcon.exe not working in Windows7 x64

  - by yas4891

  I can't use the ia64-version of devcon.exe on my Windows7 professional x64 (AMD CPU). error message tells me, that the version of this applcation is not suitable for this version of windows and I should check whether I need to use a x64 or x86 version of this application. The x86 version starts correctly, but all operations (remove, restart, disable etc) fail. Running from a command line with full privileges. Any ideas how to solve this?

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• Improving RDP performance

  - by blade

  Hi, How can I improve RDP performance? I'm on an 8mb line, and I have disabled all the fancy features like visual styles. One page said if I set a low speed, that too will increase performance. Is there any proof in this? Also, there was an ad here about an application/technology which can increase RDP performance by x20. Has anyone used this? Thanks

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• wpa_supplicant on lucid

  - by Thiago

  Hi, I'm trying to get my wifi working through the command line, but I'm not having success. I generated the wpa_supplicant.conf with wpa_passphrase and I'm running wpa_supplicant -Dwext -iwlan0 -c /etc/wpa_supplicant.conf. I only receive as a clue "Disconnect event - remove keys" and I get associated. What can I do?

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• How to make Tun module running at linux start

  - by harmony

  i installed Tun using: modprobe tun then did: lsmod | grep tun tun 83840 0 Please how to make Tun running at reboot? This is written on Hamachi website: ...Then add tun to the list of modules by using your favorite text editor and Create /etc/modules-load.d/tun.conf #Load tun module at boot. tun But this folder foes not exist in my /etc Is it wise to add line "modprobe tun" into /etc/rc.local ?

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