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• Need some pointers/hints in writing a Windows Application

  - by Bragaadeesh

  Hi, I want to create applications in windows that has complete portability (within windows OSes of course). I have tried using one application written in Visual C++ but I had a real tough time in making it run in other windows OS (like it required .net framework libraries to be installed). This put me on the back foot because I had to copy a set of DLLs from one machine to another and most of the time something works some does not. And I am TOTAL amateur in writing windows based applications since my technological forte is mostly Java. Where to kick off? (like which tools/IDEs to begin with since I am seriously into writing my own utilities/tools). I am open to clarification should you guys feel my question is vague/blunt. Thanks.

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• Writing loops with i++ or ++i [duplicate]

  - by Nonesuch

  This question already has an answer here: Why use ++i instead of i++ in cases where the value is not used anywhere else in the statement? 6 answers format of for loops 31 answers I have a question about writing loops. I always begin with (int i=0; i<10; i++) But I see many experts begin with (int i=0; i<10; ++i) Is there there any real difference, or they are same? Of course, I know the difference between pre-increment and post-increment. I mean which one I should use when writing the loop? or it depends. Thanks!

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• Pass variables between separate instances of ruby (without writing to a text file or database)

  - by boulder_ruby

  Lets say I'm running a long worker-script in one of several open interactive rails consoles. The script is updating columns in a very, very, very large table of records. I've muted the ActiveRecord logger to speed up the process, and instruct the script to output some record of progress so I know how roughly how long the process is going to take. That is what I am currently doing and it would look something like this: ModelName.all.each_with_index do |r, i| puts i if i % 250 ...runs some process... r.save end Sometimes its two nested arrays running, such that there would be multiple iterators and other things running all at once. Is there a way that I could do something like this and access that variable from a separate rails console? (such that the variable would be overwritten every time the process is run without much slowdown) records = ModelName.all $total = records.count records.each_with_index do |r, i| $i = i ...runs some process... r.save end meanwhile mid-process in other console puts "#{($i/$total * 100).round(2)}% complete" #=> 67.43% complete I know passing global variables from one separate instance of ruby to the next doesn't work. I also just tried this to no effect as well unix console 1 $X=5 echo {$X} #=> 5 unix console 2 echo {$X} #=> "" Lastly, I also know using global variables like this is a major software design pattern no-no. I think that's reasonable, but I'd still like to know how to break that rule if I'd like. Writing to a text file obviously would work. So would writing to a separate database table or something. That's not a bad idea. But the really cool trick would be sharing a variable between two instances without writing to a text file or database column. What would this be called anyway? Tunneling? I don't quite know how to tag this question. Maybe bad-idea is one of them. But honestly design-patterns isn't what this question is about.

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• Using Java PDFBox library to write Russian PDF

  - by Brad

  I am using a Java library called PDFBox trying to write text to a PDF. It works perfect for English text, but when i tried to write Russian text inside the PDF the letters appeared so strange. It seems the problem is in the font used, but i am not so sure about that, so i hope if anyone could guide me through this. Here is the important code lines : PDTrueTypeFont font = PDTrueTypeFont.loadTTF( pdfFile, new File( "fonts/VREMACCI.TTF" ) ); // Windows Russian font imported to write the Russian text. font.setEncoding( new WinAnsiEncoding() ); // Define the Encoding used in writing. // Some code here to open the PDF & define a new page. contentStream.drawString( "??????? ????????????" ); // Write the Russian text. The WinAnsiEncoding source code is : Click here --------------------- Edit on 18 November 2009 After some investigation, i am now sure it is an Encoding problem, this could be solved by defining my own Encoding using the helpful PDFBox class called DictionaryEncoding. I am not sure how to use it, but here is what i have tried until now : COSDictionary cosDic = new COSDictionary(); cosDic.setString( COSName.getPDFName("Ercyrillic"), "0420 " ); // Russian letter. font.setEncoding( new DictionaryEncoding( cosDic ) ); This does not work, as it seems i am filling the dictionary in a wrong way, when i write a PDF page using this it appears blank. The DictionaryEncoding source code is : Click here Thanks . . .

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• Using Java PDFBox library to write Russian PDF

  - by Brad

  Hello , I am using a Java library called PDFBox trying to write text to a PDF. It works perfect for English text, but when i tried to write Russian text inside the PDF the letters appeared so strange. It seems the problem is in the font used, but i am not so sure about that, so i hope if anyone could guide me through this. Here is the important code lines : PDTrueTypeFont font = PDTrueTypeFont.loadTTF( pdfFile, new File( "fonts/VREMACCI.TTF" ) ); // Windows Russian font imported to write the Russian text. font.setEncoding( new WinAnsiEncoding() ); // Define the Encoding used in writing. // Some code here to open the PDF & define a new page. contentStream.drawString( "??????? ????????????" ); // Write the Russian text. The WinAnsiEncoding source code is : Click here --------------------- Edit on 18 November 2009 After some investigation, i am now sure it is an Encoding problem, this could be solved by defining my own Encoding using the helpful PDFBox class called DictionaryEncoding. I am not sure how to use it, but here is what i have tried until now : COSDictionary cosDic = new COSDictionary(); cosDic.setString( COSName.getPDFName("Ercyrillic"), "0420 " ); // Russian letter. font.setEncoding( new DictionaryEncoding( cosDic ) ); This does not work, as it seems i am filling the dictionary in a wrong way, when i write a PDF page using this it appears blank. The DictionaryEncoding source code is : Click here Thanks . . .

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• Printing a DataTable to textbox/textfile in .NET

  - by neodymium

  Is there a predefined or "easy" method of writing a datatable to a text file or TextBox Control (With monospace font) such as DataTable.Print(): Column1| Column2| --------|--------| v1| v2| v3| v4| v5| v6| Edit Here's an initial version (vb.net) - in case anyone is interested or wants to build their own: Public Function BuildTable(ByVal dt As DataTable) As String Dim result As New StringBuilder Dim widths As New List(Of Integer) Const ColumnSeparator As Char = "|"c Const HeadingUnderline As Char = "-"c ' determine width of each column based on widest of either column heading or values in that column For Each col As DataColumn In dt.Columns Dim colWidth As Integer = Integer.MinValue For Each row As DataRow In dt.Rows Dim len As Integer = row(col.ColumnName).ToString.Length If len > colWidth Then colWidth = len End If Next widths.Add(CInt(IIf(colWidth < col.ColumnName.Length, col.ColumnName.Length + 1, colWidth + 1))) Next ' write column headers For Each col As DataColumn In dt.Columns result.Append(col.ColumnName.PadLeft(widths(col.Ordinal))) result.Append(ColumnSeparator) Next result.AppendLine() ' write heading underline For Each col As DataColumn In dt.Columns Dim horizontal As String = New String(HeadingUnderline, widths(col.Ordinal)) result.Append(horizontal.PadLeft(widths(col.Ordinal))) result.Append(ColumnSeparator) Next result.AppendLine() ' write each row For Each row As DataRow In dt.Rows For Each col As DataColumn In dt.Columns result.Append(row(col.ColumnName).ToString.PadLeft(widths(col.Ordinal))) result.Append(ColumnSeparator) Next result.AppendLine() Next Return result.ToString() End Function

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• IE8 Download's Writing to C:\?

  - by Dana

  Every time I download something using IE8 (running on Win 7) I get asked where to save the file, I choose my downloads folder, then the download continues and when complete I get the following message: "C:\ is not accessible. Access Denied." And I so I can't access any files I download. So why on earth would IE8 be trying to write to the root, and where can I change this? I've checked the cache folder location and it's correct. Dana

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• Writing an SVN hook that updates copy of committed code

  - by Jordan Reiter

  I have a SVN repository with a lot of sub-projects stored in it. Right now in my post-commit I just loop through all possible folders on the machine and run svn update on each: REPOS="$1" REV="$2" DIRS=("/path/to/local/copy/firstproject" "/path/to/local/copy/anotherproject" ... "/path/to/local/copy/spam") LOGNAME=`/usr/bin/whoami` for DIR in ${DIRS[@]} do cd $DIR sudo /usr/bin/svn update --accept=postpone 2>&1 | logger logger "$LOGNAME Updated $DIR to revision $REV (from $REPOS) " done The problem is that this is slow and redundant when I'm just committing the subfolder of one of the projects. I'm wondering if there's a better way of identifying which of the DIRS I should use and only update that one. Is there some way to do this? As far as I can tell there's no way to determine which part of a repo was committed and thus which directory needs to be updated. Is the only alternative to create a separate repository for each project? (Probably should have done that from the start, if so...)

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• Make My Own Made Java Based Text editor as default Text Editor in Windows

  - by Rohan Sharma

  I have Made a Text Editor in Java and i want to make it default text editor ,That is like in windows we have notepad as default text whose icon shows on all text files and double clicking those file(s) opens the file(s) in notepad window.. I Want to achieve same Task of Making my texte editor as default one...but only right clicking a text file and selecting my text editor as default app for opening text files do not servers the purpose,Because my text editor will not accept the file input that way,its made to accept the file input only by FileChooser...so Is There any library in java to achieve that task Of Accepting The File Input That way???

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• Running Job and Paused Job Writing to the same File

  - by Kyle Brandt

  So I ran tcpdump twice overnight by accident, both outputting to the same file. However, I ran them as jobs and one of them has been paused the whole time. Anyone have a recommendations on how to keep the file? So far I have thought of: kill -9 the paused job Pause the running job, copy the file, and then stop both. Two sounds like the safest option, anyone have a better idea other than not doing this in the first place ;-)

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• ssh through a bastion machine works on someone else's desktop but not my own

  - by Terrence Brannon

  I have to ssh into a bastion (jump) server in order to get to the final server. On the jump server, my .ssh/config says: Host * ForwardAgent yes My co-worker uses PuTTy and Pageant. When I use a putty shell to connect from his desktop to the final server as root via the jump server, it works fine. At my desk I cannot connect to the final server, only the jump server. However, if I go to his desk, and successfully log into the final server via the jump server, I can then go back to my desk and also do so.... but after a certain amount of time, my shells revert to the original behavior of not connecting to final server via jump server. The entire transcript of ssh -v -v -v final_server is here The relevant part to me is when the public key is offered but then it says 'we did not send a packet': debug1: Offering public key: /home/CORP/t.brannon/.ssh/id_dsa debug3: send_pubkey_test debug2: we sent a publickey packet, wait for reply debug1: Authentications that can continue: publickey,password debug2: we did not send a packet, disable method debug3: authmethod_lookup password

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• Writing your own Makefile for OpenBSD ports

  - by The_dude_man

  I have an OpenBSD box running Python 2.6. I want to install py-setuptools, but that package is built against 2.5. I was curious as to what the Makefile for py-setuptools [Someone with rep, fix me please][http://www.openbsd.org/cgi-bin/cvsweb/ports/devel/py-setuptools/Makefile?rev=1.13;content-type=text%2Fx-cvsweb-markup ] looks like, to see if it mentioned anything about Python 2.5 as a dependency. I did not find anything version-dependent. I typed make install in /usr/ports/devel/py-setuptools on a whim, and it blew up because of failed missing Python 2.5 dependency. That is expected. My question is, How do I modify the Makefile to build against Python 2.6 ? I came across this in the man pages [please fix me][http://www.openbsd.org/cgi-bin/man.cgi?query=port-modules&sektion=5&arch=&apropos=0&manpath=OpenBSD+4.6#CORE+MODULES] , but I am still clueless how to specify what version to build against. Also, I dont see anything that actually installs the egg.

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• Please, help writing a MIB

  - by facha

  I have a problem with an snmpwalk query returning snmp variables in a non-uniform way: .1.3.6.1.2.1.10.127.1.3.3.1.2.215 -> Hex-STRING: 24 37 4C 0C 65 0E .1.3.6.1.2.1.10.127.1.3.3.1.2.216 -> Hex-STRING: 24 37 4C 0B A2 DA .1.3.6.1.2.1.10.127.1.3.3.1.2.217 -> STRING: "$7L f:" .1.3.6.1.2.1.10.127.1.3.3.1.2.218 -> STRING: "$7L k2" As you can see, some variables are of a STRING type, others are Hex-STRING. So, I'm trying to write a simple MIB to force them all come out as Hex-STRING. This is where I've gotten so far: TEST-MIB DEFINITIONS ::= BEGIN PhysAddress ::= TEXTUAL-CONVENTION DISPLAY-HINT "1x:" STATUS current SYNTAX OCTET STRING test OBJECT-TYPE SYNTAX PhysAddresss MAX-ACCESS read-only STATUS current ::= { 1 3 6 1 2 1 10 127 1 3 3 1 2 } END However, snmpwalk doesn't seem to notice my textual convention (even though the "test" variable is being recognized). I still get a mixture of STIRNGs and Hex-STRINGs. Could anybody point to where is my mistake? snmpwalk -v2c -cpublic 192.168.1.2 TEST-MIB::test ... TEST-MIB::test.216 = Hex-STRING: 24 37 4C 0B A2 DA TEST-MIB::test.217 = STRING: "$7L f:"

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• Drive writing problem [closed]

  - by Aditya

  Ive a fat32 drive...when i save a file on it on linux . open it in windows the file is not visible...the space occupied by that file is also not accounted for...the vice versa is also true...any idea why??

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• Dell PE2950 - slow IO rates for writing and reading locally

  - by OrenM

  I'm having a serious issue with dell server PE2950. The server has really slow IO rates, so slow that I'm not able to use it anymore I tried few things to solve this: changing disks to new disks (configured them as raid1) changing perc card + perc cables reinstalling the OS of course, had to cause of changing of disks, centos 5.5 x64bit firmware update to everything virtual disks policy: No Read Ahead,Write Back, disk cache policy disabled. openmanage doesn't alert about anything, also i ran dell's diag tests, everything passed, also dell didn't see anything in deset log. dell offered to reseat everything, including the cpu, we did that as well, still io rates are slow I have several PE2950 servers, and I never had such a thing with any of those. All have similar or exact hardware as this one, all configured the same, with the same os centos 5.5 x64, same disks, same raid, same policy. Just for comparison: the problematic PE2950 server: [root@bad ~]# time sh -c "dd if=/dev/zero of=/tmp/ddfile bs=8k count=200000 && sync" 200000+0 records in 200000+0 records out 1638400000 bytes (1.6 GB) copied, 27.7946 seconds, 58.9 MB/s real 0m33.968s user 0m0.531s sys 0m26.000s good PE2950 server (with the exact same hardware): [root@good ~]# time sh -c "dd if=/dev/zero of=/tmp/ddfile bs=8k count=200000 && sync" 200000+0 records in 200000+0 records out 1638400000 bytes (1.6 GB) copied, 3.19999 seconds, 512 MB/s real 0m7.694s user 0m0.053s sys 0m4.057s Hopefully you will have an idea what can cause the problem.

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• IT lead does not have a backup, DR plan in writing

  - by Alex

  This is a general management question to IT managers out there. We are a small firm with about 4 servers in our colo cabinent. No full time IT manager. But we do have one person on monthly contract and I am having a terrible time getting him to share what these plans actually are. I am sure he HAS a plan (and its probably in his head..) but that does us no good if he gets hit by a bus.. How would you guys handle this? He is a long time friend, but I fear this is dangerous for us long term..I have confronted him on several occasions about this, and he tells me not to worry, he has go it covered.. Thanks.

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• Performance Alert Writing to event Log but not running program

  - by TooFat

  I followed the instructions here How to create and configure performance alerts in Windows Server 2003 to set up an alert if the available logical disk space on one of my drives goes below a certain number. I selected the option to write to the application event log and select the "run this program" option and put in the path to a script that sends me an email. If I copy the path to the script and run it everything works and I get the email. When I start the alert I can see that the limit I set is being exceeded and the logs are being written to the application log, but the email is never being sent. I have the runas user and pword set to a Domain Admin. If I make the "run this program path" to C:\Windows\System32\calc.exe" it also doesn't start up the calculator. The Performance Logs and alerts services is running as Local Admin with allow to interact with desktop. What am I doing wrong?

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• bitbucket on my own server

  - by valya

  I want to have something like bitbucket.org or github (but for mercurial!) on my VDS. I don't need full functionality, but I need it being able to serve repositories, accept changes (with auth!) and creating new repos in one-two clicks in web interface. What can I use? Thanks

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• zram trimming by writing zero pages

  - by qdot

  I'm using ZRAM as a backing block device for /tmp filesystem in the following manner: echo 8000000000 > /sys/block/zram0/disksize mkfs.ext4 -O dir_nlink,extent,extra_isize,flex_bg,^has_journal,uninit_bg -m0 \ -b 4096 -L "zram0" /dev/zram0 mount -o barrier=0,commit=240,noatime,nodev,nosuid /dev/zram0 /tmp chmod aogu+rwx /tmp It works out reasonably well for me - however, there is an issue here - when files are removed, they are not zero'ed, so the ZRAM does not remote the compressed pages. Obviously running dd if=/dev/zero of=/tmp/ZERO bs=1M count={free-space-some-rest}; rm /tmp/ZERO clears it up in the ZRAM - it gets notified of zero-pages and shrinks the store. How can I get ext4 to zero used pages on delete? Also, any other suggestions on how to optimize it?

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• emacs, writing custom commands which use term-mode

  - by valya

  Hello, I'm using Emacs and M-x term for a terminal. Since my typical workflow looks like this: edit some code C-x C-o to the terminal buffer (or C-x b term[Enter] or something) press Up key to use the last command press Enter to run it C-x C-o to go back I want to bind all of these (except the first step... maybe) to one command, I believe Emacs is awesome enough to do that :-) So, a command must: go to the buffer with terminal (maybe it shouldn't change any windows at all, maybe it should split the window vertially (if it weren't split already) and use the right sid) run a last command what've been run there go back to the last buffer/part of the screen Thank you! I'm not really used to the Emacs scripting system, and I hope someone will help me and someone else will be able to use the answer to improve his workflow, since I believe this is a pretty common one Examples of commands: python manage.py test python manage.py test stats python solve.py # for project-euler puzzles :-) the first and the second runs over a ssh (in a terminal) sometimes (I like developing with vagrant) I understand that it's easy to bind the first and the third ones, but the second changes too often - I'd just like to "run last command"

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• don't have "sufficient right" to my own TFS 2010

  - by soultaker

  after I removed an active directory domain service, I lost all my accounts...then not only the SQL server and the TFS stopped working, the TFs administration console also says that I don't have sufficient right to add members... Now I manage to get the SQL server kind of running, and I can see my project in team explorer, but the TFS still says SQL access denied, SQL server says I don't have permission to add new logins or add my admin account to sysadmin, the TFS still give me the TF246017 tfs could not connect to the database and I don't have sufficient right to add member to any of the project groups... Anybody knows how can I get all these permissions back....?

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• Samba users are writing files with the same owner

  - by Alex

  I created a Samba share and 3 users (Marc, Mary and Paul), both in Ubuntu (12.04 LTS) and Samba. Then I configured 3 Win7 computers to access the share, each with different credentials. I created 3 folders, one for every user, and chown'd them to the related user, chmod'd them to 0700 and even restarted Samba. Every time that Mary or Paul create a file or a directory in the share, it ends up to be owned by Marc. They all can access the Marc folder, but none can open Mary's or Paul's. Can you help me with this problem? What am I missing?

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• Windows 7 System process reading/writing like crazy

  - by Mats Ekberg

  I have a problem that my windows 7 computer sometimes starts accessing the disk like crazy for maybe 10 minutes at a time. The process in question is the "system" process. I have disabled superfetch and hibernation on my computer, if that makes any difference. I disabled those to see if they were the cause of the problems, but no change. I have 6 GB of RAM and only the web browser was started when I took the screenshot, so I don't think it was thrashing due to page faults. Any ideas on how to find the cause of this?

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• Redirecting output from syslog to own log

  - by w0rldart

  So I'm following this tutorial: http://www.howtoforge.com/using-fail2ban-to-block-wrong-ispconfig-logins and the problem I have is that rsyslog won't redirect the output from a file to another /etc/rsyslog.d/12-ispconfig.conf: if $programname == 'ispconfig' then /var/log/ispconfig.log #the file exists But I keep getting the output to syslog: ispconfig[1117]: Login failed for user asdasd on IP XX.XX.XXX.XX Any ideas how to fix this?

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• XCA: sign IPsec certificates with own CA

  - by sbrattla

  I'm trying to establish a LAN to LAN connection through a VPN tunnel. There's a Zywall at the remote office which will be responsible for establishing a connection to a Draytek at the main office. I'm able to establish the connection if I use shared keys, but I'd like to use certificates instead. I've downloaded the XCA application for Ubuntu which allows me to first create a CA certificate, and then sign "certificate signing reqests" using this CA. However, I'm uncertain if I am doing things right. More specifically<, which basic keys/extended keys should the CA certificate and the certificates themselves have? Right now I just skip selecting any keys at all, but is that right? All hints and help appreciated!

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