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• Can't login after forced shutdown

  - by user1205935

  I am on ubuntu 12.04 and forced a shutdown (hardware switch). Now I can't login anymore. In particular, after entering my password I get sent back to the login screen. The error message is to fast for me to read. I am, however, able to login into the Guest account through the usual login screen, and able to login into my own account on tty1 after pressing Ctrl+Alt+F1. What should I try to get back into my own account via the login screen and get back to a working desktop? Update: I can login with gdm, but not with the (default) lightdm. So the forced shutdown seems to have broken lightdm. The question now is, how do I fix a broken lightdm?

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• Problem Solving vs. Solution Finding

  - by ryanabr

  By enlarge, most developers fall into these two camps I will try to explain what I mean by way of example. A manager gives the developer a task that is communicated like this: “Figure out why control A is not loading on this form”. Now, right there it could be argued that the manager should probably have given better direction and said something more like: “Control A is not loading on the Form, fix it”. They might sound like the same thing to most people, but the first statement will have the developer problem solving the reason why it is failing. The second statement should have the developer looking for the solution to make it work, not focus on why it is broken. In the end, they might be the same thing, but I usually see the first approach take way longer than the second approach. The Problem Solver: The problem solver’s approach to fixing something that is broken is likely to take the error or behavior that is being observed and start to research it using a tool like Google, or any other search engine. 7/10 times this will yield results for the most common of issues. The challenge is in the other 30% of issues that will take the problem solver down the rabbit hole and cause them not to surface for days on end while every avenue is explored for the cause of the problem. In the end, they will probably find the cause of the issue and resolve it, but the cost can be days, or weeks of work. The Solution Finder: The solution finder’s approach to a problem will begin the same way the Problem Solver’s approach will. The difference comes in the more difficult cases. Rather than stick to the pure “This has to work so I am going to work with it until it does” approach, the Solution Finder will look for other ways to get the requirements satisfied that may or may not be using the original approach. For example. there are two area of an application of externally equivalent features, meaning that from a user’s perspective, the behavior is the same. So, say that for whatever reason, area A is now not working, but area B is working. The Problem Solver will dig in to see why area A is broken, where the Solution Finder will investigate to see what is the difference between the two areas and solve the problem by potentially working around it. The other notable difference between the two types of developers described is what point they reach before they re-emerge from their task. The problem solver will likely emerge with a triumphant “I have found the problem” where as the Solution Finder will emerge with the more useful “I have the solution”. Conclusion At the end of the day, users are what drives features in software development. With out users there is no need for software. In todays world of software development with so many tools to use, and generally tight schedules I believe that a work around to a problem that takes 8 hours vs. the more pure solution to the problem that takes 40 hours is a more fruitful approach.

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• After Upgrading to 12.04 the Kernel won't Initiate

  - by Jeff

  I had 11.10 and tried to upgrade recently, via the installer pop-up reminder. Afterwards it would not boot, citing an issue with the kernel. So I've setup a 12.04 installation USB, which appears to work fine. The problem is it doesn't provide an upgrade option, just format and install or install alongside the current broken kernel. I believe I should be able to still get the information from the broken OS after installing alongside, but if there is a way to fix this more directly that would be preferable.

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• Dependency problems installing wine 1.5 on ubuntu 12.04 x64

  - by Moreno

  I tried: $ sudo add-apt-repository ppa:ubuntu-wine/ppa $ sudo apt-get update $ sudo apt-get install wine1.5 result was: $ sudo apt-get install wine1.5 Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: wine1.5 : Depends: wine1.5-i386 (= 1.5.6-0ubuntu1~pulse17) E: Unable to correct problems, you have held broken packages. then I tried: $ sudo dpkg --configure -a $ sudo apt-get install -f result was: $ sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded. after all I tried: $ sudo apt-get build-dep wine1.5 Reading package lists... Done Building dependency tree Reading state information... Done The following packages have unmet dependencies: libgnutls-dev : Depends: libgnutls26 (= 2.12.14-5ubuntu3) but 2.12.19-1 is to be installed Depends: libgnutlsxx27 (= 2.12.14-5ubuntu3) but it is not going to be installed Depends: libgnutls-openssl27 (= 2.12.14-5ubuntu3) but it is not going to be installed E: Build-dependencies for wine1.5 could not be satisfied. also tried: $ sudo apt-get install -y ia32-libs Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: ia32-libs : Depends: ia32-libs-multiarch E: Unable to correct problems, you have held broken packages. Using synaptic: using ubuntu software center (USC): Somebody can help me? Thanks. Trying again: $ sudo dpkg --configure -a $ sudo apt-get install -f Reading package lists... Done Building dependency tree Reading state information... Done 0 upgraded, 0 newly installed, 0 to remove and 14 not upgraded. $ sudo apt-get install wine1.5 Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: wine1.5 : Depends: wine1.5-i386 (= 1.5.10-0ubuntu1~pulse19+build4) E: Unable to correct problems, you have held broken packages.

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• How to safely and painlessly switch from Kubuntu to Lubuntu?

  - by cdshines

  I've had Kubuntu installed for several years, updating from one major release to another, and now I think I'd like to try to switch to Lubuntu. But since my distribution is already tuned and shaped to satisfy my needs, I'd like not to get a fresh installation, but just purge kubuntu-desktop and install lubuntu-desktop. But when I execute sudo apt-get install lubuntu-desktop, it gives me an error of the following essence: The following packages have unmet dependencies: lubuntu-desktop : Depends: usb-modeswitch but it is not going to be installed E: Unable to correct problems, you have held broken packages. So, I investigate the modeswitch problem and get The following packages have unmet dependencies: usb-modeswitch : Depends: usb-modeswitch-data (>= 20110227-1~) but it is not going to be installed E: Unable to correct problems, you have held broken packages. But: Reading state information... Done usb-modeswitch-data is already the newest version. So, my question is: what actions should I take in order to obtain a clean and fresh installation of Lubuntu? And also, how do I safely remove all the kubuntu-desktop-related stuff?

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• Cannot install "ATI/AMD proprietary FGLRX graphics driver" (SystemError)

  - by Fisherman John

  I have just installed a fresh copy of 12.04.1 64bit. I formatted my PC completely and enabled updates during the installation. After the installation was complete, I went on updating my software. However, when I wanted to install the additional drivers using the Additional Drivers tool (namely "ATI/AMD proprietary FGLRX graphics driver"), it gave me this error: SystemError: E:Unable to correct problems, you have held broken packages. The same error shows up if I try installing the post-release updates driver. Installing the drivers from the terminal results in this output: XXXXXX:~$ sudo apt-get install fglrx [sudo] password for XXXXX: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: fglrx : Depends: lib32gcc1 but it is not going to be installed Depends: libc6-i386 but it is not going to be installed E: Unable to correct problems, you have held broken packages." I get this using "sudo apt-get update": http://pastebin.com/AWAtDXjY But "sudo apt-get install fglrx" still get me this error: http://pastebin.com/RYM55bVN & "sudo apt-get -f install fglrx" gives me this error: http://pastebin.com/xxekajvP Any help would be greatly appreciated. (Please note that I'm new to Linux, coming directly from Windows. I have tried Ubuntu twice or so before, but it was not for a long period of time. The drivers got installed smoothly the few times I've tried Ubuntu, but post-release updates never worked for me.) [I am going to work now, so I can only answer from my phone. Can't really test any new solutions you may give me until ~10 hours from now on. Maybe more.] @stonedsquirrel When I try to run that command, I get this error: "XXXXXX:~$ sudo apt-get install fglrx [sudo] password for XXXXX: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: fglrx : Depends: lib32gcc1 but it is not going to be installed Depends: libc6-i386 but it is not going to be installed E: Unable to correct problems, you have held broken packages." ie. I get the same error. ( I am Fisherman John, dunno how to login & thereby respond to your comment again _ )

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• 12.04 install now just blank screen

  - by bull

  I have attempted to install a new copy of 12.04 using usb stick instead of using download manager. Everything went fine while using usb stick until I restarted after installation was complete. Then, I got the screen with cursor and 4 lines of script with the first line saying "could not write to bytes: broken pipes". I have used several versions of Ubuntu from 6.04, but this one seems broken. I have tried nouveau.blacklist and many other suggestions to no luck. I am using hp pavilion m7790y dual core processor system, with nvidia 7600gt video card, 4gb ram and two hard drives with Vista on one and fresh install of Ubuntu 12.04 on other. I'm still looking for help to solve this problem. Thanks in advance.

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• Downgrading Mercurial in MacPorts

  - by $utils.escapeXML($entry.author)

  Another Mercurial release, another broken extension. Mercurial 2.3 breaks hgforest ... once more. Of course, with open source, the notion of backwards compatibility is sometimesoften left as an exercise for the curious readers of said source code, so until someone gets around to fix up hgforest ... once more, to keep up with Mercurial's churn, one way to get hgforest working again is to downgrade to Mercurial 2.2.3, for example. In MacPorts, assuming you have installed Mercurial 2.2.3 before, and it was updated to the broken Mercurial 2.3 version, it's pretty easy to get back to a working state: sudo port deactivate [email protected]_1sudo port activate [email protected]_0

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• yum install php-devel amongst other commands returning problems

  - by user3791722

  I run yum install php-devel and it returns this. Typically I'd just run it with --skip-broken, but when I do, it still doesn't do the trick. Available: php-common-5.3.3-22.el6.x86_64 (rhel-x86_64-server-6) php-common(x86-64) = 5.3.3-22.el6 Available: php-common-5.3.3-23.el6_4.x86_64 (rhel-x86_64-server-6) php-common(x86-64) = 5.3.3-23.el6_4 Available: php-common-5.3.3-26.el6.x86_64 (rhel-x86_64-server-6) php-common(x86-64) = 5.3.3-26.el6 Available: php54w-common-5.4.29-2.w6.x86_64 (webtatic) php-common(x86-64) = 5.4.29-2.w6 Available: php54w-common-5.4.30-1.w6.x86_64 (webtatic) php-common(x86-64) = 5.4.30-1.w6 Available: php55w-common-5.5.13-2.w6.x86_64 (webtatic) php-common(x86-64) = 5.5.13-2.w6 Installing: php55w-common-5.5.14-1.w6.x86_64 (webtatic) php-common(x86-64) = 5.5.14-1.w6 You could try using --skip-broken to work around the problem When run with --skip-broken it returns this at the end: Packages skipped because of dependency problems: autoconf-2.63-5.1.el6.noarch from rhel-x86_64-server-6 automake-1.11.1-4.el6.noarch from rhel-x86_64-server-6 pcre-devel-7.8-6.el6.x86_64 from rhel-x86_64-server-6 php-5.3.3-27.el6_5.1.x86_64 from rhel-x86_64-server-6 php-cli-5.3.3-27.el6_5.1.x86_64 from rhel-x86_64-server-6 php-common-5.3.3-27.el6_5.1.x86_64 from rhel-x86_64-server-6 php-mysql-5.3.3-27.el6_5.1.x86_64 from rhel-x86_64-server-6 php-pdo-5.3.3-27.el6_5.1.x86_64 from rhel-x86_64-server-6 php-soap-5.3.3-27.el6_5.1.x86_64 from rhel-x86_64-server-6 php55w-cli-5.5.14-1.w6.x86_64 from webtatic php55w-common-5.5.14-1.w6.x86_64 from webtatic php55w-devel-5.5.14-1.w6.x86_64 from webtatic This problem has arisen with a few other similar commands when installing something related to php, except I've just done without them. I need to install this for something I'm trying to do. I do remember upgrading to PHP 5.4 and our entire infrastructure coming down due to it requiring PHP 5.3, so I downgraded as quick as possible to get everything back running and that may contribute to the issue. If you have any idea why this is happening and how I could get the package on the system while remaining on PHP 5.3, please let me know. Thanks.

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• C# CreatePipe() -> Protected memory error

  - by M. Dimitri

  Hi all, I trying to create a pipe using C#. The code is quite simple but I get a error saying "Attempted to read or write protected memory. This is often an indication that other memory is corrupt." Here the COMPLETE code of my form : public partial class Form1 : Form { [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)] public static extern bool CreatePipe(out SafeFileHandle hReadPipe, out SafeFileHandle hWritePipe, SECURITY_ATTRIBUTES lpPipeAttributes, int nSize); [StructLayout(LayoutKind.Sequential)] public struct SECURITY_ATTRIBUTES { public DWORD nLength; public IntPtr lpSecurityDescriptor; public bool bInheritHandle; } public Form1() { InitializeComponent(); } private void btCreate_Click(object sender, EventArgs e) { SECURITY_ATTRIBUTES sa = new SECURITY_ATTRIBUTES(); sa.nLength = (DWORD)System.Runtime.InteropServices.Marshal.SizeOf(sa); sa.lpSecurityDescriptor = IntPtr.Zero; sa.bInheritHandle = true; SafeFileHandle hWrite = null; SafeFileHandle hRead = null; if (CreatePipe(out hRead, out hWrite, sa, 4096)) { MessageBox.Show("Pipe created !"); } else MessageBox.Show("Error : Pipe not created !"); } } At the top I declare : using DWORD = System.UInt32; Thank you very much if someone can help.

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• Unable to fetch initial output of "defrag" commad in Windows Server 2008 R2 in WOW64 environment.

  - by Ganesh

  Hi All, [Application & code back ground] I have an MFC application which is executing on Windows Server 2008 R2 in WOW64 environment. In which on user input it defragments the selected drive on the disk. I initiated the process(.i.e. cmd /c defrag –v c:) of defragmentation using the CreateProcess() API, along with this to display output of the process on the main screen I created the pipe using CreatePipe() API. I used PeekNamedPipe() & ReadFile() API to get the output and display. [Problem Area] When the process is launched I am not getting the initial output as below: Microsoft Disk fragmenter Copyright © 2007 Microsoft Crop. Invoking defragmentation on (C:)…. I constantly monitor the output of the process while it is under progress but not able to get any thing as output in the pipe. It seem the process is not doing any thing and appears as if the application is not responding. But after certain period of time, once the process is about to completed I get result along with the initial data. [Sample code] //Pipe created if(0 == ::CreatePipe(&l_hStdOutRead, &l_hStdOutWrite, &l_SecurityAttribute, (DWORD)NULL)) { //Error code } //Process created/launched if (0 == ::CreateProcess(NULL, (LPTSTR)f_csProcessName, &l_stSecurityAttributes, NULL, TRUE, CREATE_NO_WINDOW, NULL,NULL, &l_StartupInfo, &l_CmdPI)) { //Error code } //Read output if (0 == ::PeekNamedPipe(m_hStdOutRead, l_cArrPeekBuffer, (DWORD)NULL, (LPDWORD)NULL, &l_dwAvailable, (LPDWORD)NULL)) { //Return to read again } if (MPLUSFALSE == ::ReadFile(m_hStdOutRead, l_cArrOutput, min(BUFFER_SIZE - 2, l_dwAvailable), &l_dwRead, NULL) || !l_dwRead) { //error code } //Display data. If any one is aware of similar problem or worked on the similar issue please let me know the solution. Thanks in Advance, Ganesh

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• Classic ASP to WCF using the Service Moniker

  - by Jab

  I am trying to consume a WCF logging service from classic ASP without deploy a Com wrapper. I found a method of doing so here. Here is the vb script, simplified. Dim addr addr = "service:mexAddress=""net.pipe://localhost/Services/Logging/LoggingManager/Mex""," _ & "address=""net.pipe://localhost/Services/Logging/LoggingManager/classic/""," _ & "contract=""ILoggingManagerClassic"", contractNamespace=""http://Services.Logging.Classic/""," _ & "binding=""NetNamedPipeBinding_ILoggingManagerClassic"", bindingNamespace=""http://Services.Logging.Classic/""" set objErrorLogger = GetObject(addr) Dim strError : strError = objErrorLogger.LogError("blahblah") This works on Server 2008, but fails with this error on Server 2003. Failed to do mex retrieval:Metadata contains a reference that cannot be resolved: net.pipe://localhost/Services/Logging/LoggingManager/Mex.. Only when running through ASP does it fail, a sample VBS file on the same machine using the same code works fine. I think it may be permission related, but don't know where to begin. Anyone have any ideas? EDIT - let me clarify that the WCF host is a windows service running as NETWORK SERVICE. If this belongs on server fault, a moderator can move it. I have an account there as well.

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• Perl: Process Communcation

  - by Shiftbit

  Can anyone explain how I can successfully get my process communicating. I find the perldoc on IPC confusing. What I have so far is: $| = 1; $SIG{CHLD} = {wait}; my $parentPid = $$; if ($pid = fork();) ) { if ($pid == 0) { pipe($parentPid, $$); open PARENT, "<$parentPid"; while (<PARENT>) { print $_; } close PARENT; exit(); } else { pipe($parentPid, $pid); open CHILD, ">$pid"; or error("\nError opening: childPid\nRef: $!\n"); open (FH, "<list") or error("\nError opening: list\nRef: $!\n"); while(<FH>) { print CHILD, $_; } close FH or error("\nError closing: list\nRef: $!\n"); close CHILD or error("\nError closing: childPid\nRef: $!\n); } else { error("\nError forking\nRef: $!\n"); } First Question is what does Perldoc pipe mean by READHANDLE, WRITEHANDLE? Second Questions is can I implement a solution without relying on CPAN or other modules?

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• How to install DBD::mysql on OS X Server 10.6?

  - by Zoran Simic

  Trying to install DBD::mysql on OS X Server 10.6 (mac mini server). But I'm missing the mysql headers apparently. Since mysql is already part of OS X Server 10.6, I would like to NOT install anything else (no fink or darwin ports installs), just whatever's needed to get DBD::mysql installed and working. Do you know how I could do that? Do I have to install the headers somewhere? And if so, where? (again: I don't want to install another version of mysql on the box, want to use the version it came with). Is there a way to install DBD::mysql without compiling any C files? This is the error I get (the actual error is much longer, but these are the most meaningful bits, this is the first error reported). Checking if your kit is complete... Looks good Unrecognized argument in LIBS ignored: '-pipe' Note (probably harmless): No library found for -lmysqlclient Multiple copies of Driver.xst found in: /Library/Perl/5.10.0/darwin-thread-multi-2level/auto/DBI/ /System/Library/Perl/Extras/5.10.0/darwin-thread-multi-2level/auto/DBI/ at Makefile.PL line 907 Using DBI 1.611 (for perl 5.010000 on darwin-thread-multi-2level) installed in /Library/Perl/5.10.0/darwin-thread-multi-2level/auto/DBI/ Writing Makefile for DBD::mysql cp lib/DBD/mysql.pm blib/lib/DBD/mysql.pm cp lib/DBD/mysql/GetInfo.pm blib/lib/DBD/mysql/GetInfo.pm cp lib/DBD/mysql/INSTALL.pod blib/lib/DBD/mysql/INSTALL.pod cp lib/Bundle/DBD/mysql.pm blib/lib/Bundle/DBD/mysql.pm gcc-4.2 -c -I/Library/Perl/5.10.0/darwin-thread-multi-2level/auto/DBI -I/usr/include -fno-omit-frame-pointer -pipe -D_P1003_1B_VISIBLE -DSIGNAL_WITH_VIO_CLOSE -DSIGNALS_DONT_BREAK_READ -DIGNORE_SIGHUP_SIGQUIT -DDBD_MYSQL_INSERT_ID_IS_GOOD -g -arch x86_64 -arch i386 -arch ppc -g -pipe -fno-common -DPERL_DARWIN -fno-strict-aliasing -I/usr/local/include -Os -DVERSION=\"4.014\" -DXS_VERSION=\"4.014\" "-I/System/Library/Perl/5.10.0/darwin-thread-multi-2level/CORE" dbdimp.c In file included from dbdimp.c:20: dbdimp.h:22:49: error: mysql.h: No such file or directory dbdimp.h:23:45: error: mysqld_error.h: No such file or directory dbdimp.h:25:49: error: errmsg.h: No such file or directory

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• Yet another Python Windows CMD mklink problem ... can't get it to work!

  - by Felix Dombek

  OK I have just posted another question which outlined my program but the specific problem was different. Now, my program just stops working without any message whatsoever. I'd be grateful if someone could help me here. I want to create symlinks for each file in a directory structure, all in one large flat folder, and have the following code by now: # loop over directory structure: # for all items in current directory, # if item is directory, recurse into it; # else it's a file, then create a symlink for it def makelinks(folder, targetfolder, cmdprocess = None): if not cmdprocess: cmdprocess = subprocess.Popen("cmd", stdin = subprocess.PIPE, stdout = subprocess.PIPE, stderr = subprocess.PIPE) print(folder) for name in os.listdir(folder): fullname = os.path.join(folder, name) if os.path.isdir(fullname): makelinks(fullname, targetfolder, cmdprocess) else: makelink(fullname, targetfolder, cmdprocess) #for a given file, create one symlink in the target folder def makelink(fullname, targetfolder, cmdprocess): linkname = os.path.join(targetfolder, re.sub(r"[\/\\\:\*\?\"\<\>\|]", "-", fullname)) if not os.path.exists(linkname): try: os.remove(linkname) print("Invalid symlink removed:", linkname) except: pass if not os.path.exists(linkname): cmdprocess.stdin.write("mklink " + linkname + " " + fullname + "\r\n") So this is a top-down recursion where first the folder name is printed, then the subdirectories are processed. If I run this now over some folder, the whole thing just stops after 10 or so symbolic links. Here is the output: D:\Musik\neu D:\Musik\neu\# Electronic D:\Musik\neu\# Electronic\# tag & reencode D:\Musik\neu\# Electronic\# tag & reencode\ChillOutMix D:\Musik\neu\# Electronic\# tag & reencode\Unknown D&B D:\Musik\neu\# Electronic\# tag & reencode\Unknown D&B 2 The program still seems to run but no new output is generated. It created 9 symlinks for some files in the # tag & reencode and the first three files in the ChillOutMix folder. The cmd.exe Window is still open and empty, and shows in its title bar that it is currently processing the mklink command for the third file in ChillOutMix. I tried to insert a time.sleep(2) after each cmdprocess.stdin.write in case Python is just too fast for the cmd process, but it doesn't help. Does anyone know what the problem might be?

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• How to install DBD::mysql on OS X server?

  - by Zoran Simic

  Trying to install DBD::mysql on OS X Server 10.6 (mac mini server). But I'm missing the mysql headers apparently. Since mysql is already part of OS X Server 10.6, I would like to NOT install anything else (no fink or darwin ports installs), just whatever's needed to get DBD::mysql installed and working. Do you know how I could do that? Do I have to install the headers somewhere? And if so, where? (again: I don't want to install another version of mysql on the box, want to use the version it came with). Is there a way to install DBD::mysql without compiling any C files? This is the error I get (the actual error is much longer, but these are the most meaningful bits, this is the first error reported). Checking if your kit is complete... Looks good Unrecognized argument in LIBS ignored: '-pipe' Note (probably harmless): No library found for -lmysqlclient Multiple copies of Driver.xst found in: /Library/Perl/5.10.0/darwin-thread-multi-2level/auto/DBI/ /System/Library/Perl/Extras/5.10.0/darwin-thread-multi-2level/auto/DBI/ at Makefile.PL line 907 Using DBI 1.611 (for perl 5.010000 on darwin-thread-multi-2level) installed in /Library/Perl/5.10.0/darwin-thread-multi-2level/auto/DBI/ Writing Makefile for DBD::mysql cp lib/DBD/mysql.pm blib/lib/DBD/mysql.pm cp lib/DBD/mysql/GetInfo.pm blib/lib/DBD/mysql/GetInfo.pm cp lib/DBD/mysql/INSTALL.pod blib/lib/DBD/mysql/INSTALL.pod cp lib/Bundle/DBD/mysql.pm blib/lib/Bundle/DBD/mysql.pm gcc-4.2 -c -I/Library/Perl/5.10.0/darwin-thread-multi-2level/auto/DBI -I/usr/include -fno-omit-frame-pointer -pipe -D_P1003_1B_VISIBLE -DSIGNAL_WITH_VIO_CLOSE -DSIGNALS_DONT_BREAK_READ -DIGNORE_SIGHUP_SIGQUIT -DDBD_MYSQL_INSERT_ID_IS_GOOD -g -arch x86_64 -arch i386 -arch ppc -g -pipe -fno-common -DPERL_DARWIN -fno-strict-aliasing -I/usr/local/include -Os -DVERSION=\"4.014\" -DXS_VERSION=\"4.014\" "-I/System/Library/Perl/5.10.0/darwin-thread-multi-2level/CORE" dbdimp.c In file included from dbdimp.c:20: dbdimp.h:22:49: error: mysql.h: No such file or directory dbdimp.h:23:45: error: mysqld_error.h: No such file or directory dbdimp.h:25:49: error: errmsg.h: No such file or directory

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• Trouble with piping through sed

  - by Joel

  I am having trouble piping through sed. Once I have piped output to sed, I cannot pipe the output of sed elsewhere. wget -r -nv http://127.0.0.1:3000/test.html Outputs: 2010-03-12 04:41:48 URL:http://127.0.0.1:3000/test.html [99/99] -> "127.0.0.1:3000/test.html" [1] 2010-03-12 04:41:48 URL:http://127.0.0.1:3000/robots.txt [83/83] -> "127.0.0.1:3000/robots.txt" [1] 2010-03-12 04:41:48 URL:http://127.0.0.1:3000/shop [22818/22818] -> "127.0.0.1:3000/shop.29" [1] I pipe the output through sed to get a clean list of URLs: wget -r -nv http://127.0.0.1:3000/test.html 2>&1 | grep --line-buffered -v ERROR | sed 's/^.*URL:\([^ ]*\).*/\1/g' Outputs: http://127.0.0.1:3000/test.html http://127.0.0.1:3000/robots.txt http://127.0.0.1:3000/shop I would like to then dump the output to file, so I do this: wget -r -nv http://127.0.0.1:3000/test.html 2>&1 | grep --line-buffered -v ERROR | sed 's/^.*URL:\([^ ]*\).*/\1/g' > /tmp/DUMP_FILE I interrupt the process after a few seconds and check the file, yet it is empty. Interesting, the following yields no output (same as above, but piping sed output through cat): wget -r -nv http://127.0.0.1:3000/test.html 2>&1 | grep --line-buffered -v ERROR | sed 's/^.*URL:\([^ ]*\).*/\1/g' | cat Why can I not pipe the output of sed to another program like cat?

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• How can I use `pipe` to facilitate interprocess communication in Perl?

  - by Shiftbit

  Can anyone explain how I can successfully get my processes communicating? I find the perldoc on IPC confusing. What I have so far is: $| = 1; $SIG{CHLD} = {wait}; my $parentPid = $$; if ($pid = fork();) ) { if ($pid == 0) { pipe($parentPid, $$); open PARENT, "<$parentPid"; while (<PARENT>) { print $_; } close PARENT; exit(); } else { pipe($parentPid, $pid); open CHILD, ">$pid"; or error("\nError opening: childPid\nRef: $!\n"); open (FH, "<list") or error("\nError opening: list\nRef: $!\n"); while(<FH>) { print CHILD, $_; } close FH or error("\nError closing: list\nRef: $!\n"); close CHILD or error("\nError closing: childPid\nRef: $!\n); } else { error("\nError forking\nRef: $!\n"); } First: What does perldoc pipe mean by READHANDLE, WRITEHANDLE? Second: Can I implement a solution without relying on CPAN or other modules?

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• Rails wont install at create Makefile stage

  - by mattc

  I am getting this error after running sudo gem install rails /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb creating Makefile make xcrun cc -I. - I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin12.0 -I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal-darwin12.0 -I. -DJSON_GENERATOR -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -arch i386 -arch x86_64 -g -O3 -pipe -fno-common -DENABLE_DTRACE -fno-common -pipe -fno-common -c generator.c xcrun: Error: failed to exec real xcrun. (No such file or directory) cc -arch i386 -arch x86_64 -pipe -bundle -undefined dynamic_lookup -o generator.bundle generator.o -L. -L/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib -L. -arch i386 -arch x86_64 -lruby -lpthread -ldl -lobjc i686-apple-darwin11-llvm-gcc-4.2: generator.o: No such file or directory i686-apple-darwin11-llvm-gcc-4.2: generator.o: No such file or directory lipo: can't figure out the architecture type of: /var/tmp//ccHCNNwM.out make: *** [generator.bundle] Error 1 I have Homebrew installed, Xcode 4.4 with command line tools installed, Osx 10.6.2 I run gem env and get this but not sure what I'm looking for: RubyGems Environment: - RUBYGEMS VERSION: 1.8.24 - RUBY VERSION: 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin12.0] - INSTALLATION DIRECTORY: /Library/Ruby/Gems/1.8 - RUBY EXECUTABLE: /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby - EXECUTABLE DIRECTORY: /usr/bin - RUBYGEMS PLATFORMS: - ruby - universal-darwin-12 - GEM PATHS: - /Library/Ruby/Gems/1.8 - /Users/matthewcleghorn/.gem/ruby/1.8 - /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/gems/1.8 - GEM CONFIGURATION: - :update_sources => true - :verbose => true - :benchmark => false - :backtrace => false - :bulk_threshold => 1000 - REMOTE SOURCES: - http://rubygems.org/ Any help greatly appreciated. Thanks.

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• Strange Syntax Parsing Error in Python?

  - by user213060

  Am I missing something here? Why shouldn't the code under the "Broken" section work? I'm using Python 2.6. #!/usr/bin/env python def func(a,b,c): print a,b,c #Working: p={'c':3} func(1, b=2, c=3, ) #Working: func(1, b=2, **p,) #Broken: func(1, b=2, **p, )

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• retreive the url of the page an image sits on

  - by Ayyash

  I'm trying to log URLs that access broken images, using an HTTP module to catch those images when accessed. How do you retrieve the URL where that image sits on? is there a way to do it the other way round too? That is, loop through images served in a URL and decide which ones are broken. This is all in ASP.NET with C#.

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• What is the purpose of netcat's "-w timeout" option when ssh tunneling?

  - by jrdioko

  I am in the exact same situation as the person who posted another question, I am trying to tunnel ssh connections through a gateway server instead of having to ssh into the gateway and manually ssh again to the destination server from there. I am trying to set up the solution given in the accepted answer there, a ~/.ssh/config that includes: host foo User webby ProxyCommand ssh a nc -w 3 %h %p host a User johndoe However, when I try to ssh foo, my connection stays alive for 3 seconds and then dies with a Write failed: Broken pipe error. Removing the -w 3 option solves the problem. What is the purpose of that -w 3 in the original solution, and why is it causing a Broken pipe error when I use it? What is the harm in omitting it?

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• Limit on WMIC requests from a Windows Service

  - by Anders

  Hi all, Does anyone know if there is limit on how many wmic requests Windows can handle simultaneously if they are originating from a Windows service? The reason I'm asking is because my application fails when too many simultaneous requests have been initiated. I don't get any data back from the application. However, If I compile the Python application and run it as a stand alone application all will work fine. The wmic calls are looking like this: subprocess.Popen("wmic path Win32_PerfFormattedData_PerfOS_Memory get CommittedBytes", stdout=subprocess.PIPE, stderr=subprocess.PIPE) This makes me wonder, is there a limit Windows Services and what they can perform? I mean, if the .exe file can handle all requests, then it must be something to do with the fact that I have compiled it as a Windows service.

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• Process ANSI escape codes before piping

  - by Tiddo

  I'm trying to pipe the output of a script (Mocha) to another script. However there is one problem: Mocha generates quite a few ansi escape characters to update the screen on the fly. These characters are also send through the pipe. Is there a way to process the ansi sequence such that the output is the same as the final output to the screen? I do want to keep color escape sequences, but not the curser movement escapes. Edit: I have a partial solution now (for Mocha only): so far it seems that Mocha with the spec output (the one I use) only generates color ecape characters and the CSI 0G escape sequence. The CSI 0G escape character means that the cursor should move back to the beginning of the line. Mocha uses this to overwrite a line completely. Therefore you could simply create a sed regexp which will delete everything up to that escape sequence on a line: sed 's/^.*\x1b\[0G//g'. I am still looking for the complete solution though.

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• Help debugging Sendmail/Mailman configuration issue

  - by inxilpro

  Hi folks, I'm trying to configure a server with Sendmail and Mailman. I've been getting "Broken pipe" errors for a while, and have slowly been debugging. I fixed some permission issues, and changed the user that Mailman expects to be called from, among other things. Finally, I'd gone through everything I could think of, so I added a new test to see if it's the Mailman script or Sendmail that's causing the problem. Here's the error I'm getting now (stripped of timestamps and identifying information): <-- MAIL FROM:[email protected] Authentication-Warning: xxxxx.org: xxxxxxxxxxxxxx.net [xx.xx.xxx.xxx] didn't use HELO protocol --- 250 2.1.0 [email protected]... Sender ok <-- RCPT TO: [email protected] --- 250 2.1.5 [email protected]... Recipient ok <-- DATA --- 354 Enter mail, end with "." on a line by itself [email protected], size=20, class=0, nrcpts=1, msgid=<[email protected]>, proto=SMTP, relay=xxxxxxxxxxxxxx.net [xx.xx.xxx.xxx] --- 250 2.0.0 o6KMg2xZ025804 Message accepted for delivery alias [email protected] => "|/bin/echo foo" SYSERR(root): putbody: write error: Broken pipe 0: fl=0x0, mode=20660: CHR: dev=0/15, ino=776, nlink=1, u/gid=0/0, size=0 1: fl=0x1, mode=20660: CHR: dev=0/15, ino=776, nlink=1, u/gid=0/0, size=0 2: fl=0x1, mode=20660: CHR: dev=0/15, ino=776, nlink=1, u/gid=0/0, size=0 3: fl=0x2, mode=140777: SOCK localhost->[[UNIX: /dev/log]] 5: fl=0x0, mode=100600: dev=8/3, ino=486765, nlink=1, u/gid=0/51, size=5 6: fl=0x8000, mode=100640: dev=8/3, ino=65501, nlink=1, u/gid=0/0, size=12288 7: fl=0x8000, mode=100640: dev=8/3, ino=65501, nlink=1, u/gid=0/0, size=12288 8: fl=0x8000, mode=100640: dev=8/3, ino=65510, nlink=1, u/gid=0/0, size=12288 9: fl=0x8000, mode=100640: dev=8/3, ino=65510, nlink=1, u/gid=0/0, size=12288 10: fl=0x8000, mode=100640: dev=8/3, ino=64814, nlink=1, u/gid=0/51, size=12288 11: fl=0x8000, mode=100640: dev=8/3, ino=64814, nlink=1, u/gid=0/51, size=12288 12: fl=0x1, mode=100600: dev=8/3, ino=486767, nlink=1, u/gid=0/51, size=754 13: fl=0x1, mode=10600: FIFO: dev=0/5, ino=7649785, nlink=1, u/gid=0/51, size=0 14: fl=0x0, mode=10600: FIFO: dev=0/5, ino=7649786, nlink=1, u/gid=0/51, size=0 MCI@0x0: NULL MCI@0x0: NULL to="|/bin/echo foo", [email protected] (8/0), delay=00:00:08, xdelay=00:00:00, mailer=prog, pri=30476, dsn=5.0.0, stat=Service unavailable o6KMsnxX025948: DSN: Service unavailable done; delay=00:00:08, ntries=1 The alias in /etc/aliases is: cmtest: "|/bin/echo foo" As you can see, even when trying to pipe to /bin/echo I still get the same error. But I can't for the life of me figure out what else to check. Normal aliases work fine. Any ideas? Thanks!

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