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  • How do I open a file in such a way that if the file doesn't exist it will be created and opened automatically?

    - by snakile
    Here's how I open a file for writing+ : if( fopen_s( &f, fileName, "w+" ) !=0 ) { printf("Open file failed\n"); return; } fprintf_s(f, "content"); If the file doesn't exist the open operation fails. What's the right way to fopen if I want to create the file automatically if the file doesn't already exist? EDIT: If the file does exist, I would like fprintf to overwrite the file, not to append to it.

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  • How do I understand the 3 lines batch script?

    - by Runner
    ECHO @ECHO OFF ^& (IF EXIST "%%~dp0%~n1.swf" (DEL "%%~dp0%~n1.swf")) ^& %mxmlcPath% %opts% -file-specs "%%~dp0%~nx1" ^& (IF EXIST "%%~dp0%~n1.swf" (CALL "%%~dp0%~n1.swf") ELSE (PAUSE)) > "%~dpn1.bat" REM Immediately execute the generated bat @ECHO on CALL "%~dpn1.bat" It's really a mess for me(like ECHO @ECHO OFF,what's that intended for?), can someone elaborate it?

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  • Problem with File uplolad in javascript.

    - by Nikhil
    I have used javascript to upload more than one file. when user clicks on 'add more' javascript appends new object to older div using innerHTML. Now the problem is if I select a file and then click on "add more" then new file button exist but older selected file removes and two blank file buttons display. I want this old file must be selected when user add new file button. If anybody can, Help Plz!!! tnX.

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  • icacls batch file multiple directories with wildcards help needed

    - by user153521
    I have written the following batch file that does a great job combing through all folders beginning with the number 3 and applying folder permissions to any 2010 subfolder. Example of the batch filesis below: for /D %%f in (D:\Data\3*) do icacls "%%f\2010" /inheritance:r /grant:r "Domain Admins":(OI)(CI)F Question : How can I improve this script to allow for me to apply the permissions to a specific folder below ANY folder within the folders beginning with 3? here is an example of my failed attempt: for /D %%f in (D:\Data\3*) do icacls "%%f*\specificfolder" /inheritance:r /grant:r "Domain Admins":(OI)(CI)F

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  • Xcopy batch file behavior

    - by piagetblix
    I have the following backup batch file: xcopy C:\test.txt \server\Data\user\"data test" /e /y /i The issue is why does it not only copy the file listed but proceeds to copy the whole root directory? When i remove the switches it only copies the file. There is nothing in the description of those switches that seems to cause the behavior... They are there because I'm picking up where someone else left and all the batch files use these 3 switches. Thanks

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  • excel cannot open the file xxx.xlsx' because the file format is not valid error

    - by Yavuz
    I have difficulty open opening word and excel files suddenly. Only particular office file give me the problem. These files were previously scanned by combo fix and I believe they were damaged. The error response that I from office is Excel cannot open the file xxx.xlsx because the file format is not valid. Verify that the file has not been corrupted and that the file extension matches the format of the file. This is for excel and a similar kind of error response comes for word. The file looks fine. I mean the size vise... Please help me with this problem. I really appreciate your help and time....

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  • Upon clicking on a file, excel opens but not the file itself

    - by william
    Platform: Windows XP SP2, Excel 2007 Problem description: Upon clicking on a file in Windows Explorer (file is either .xls or .xlsx) Excel 2007 opens, but does not open the file itself. I need either to click on a file again in Windows Explorer or open it manually with File/Open ... from Excel. Does anyone know what could cause this rather strange behaviour ? The old versions of Excel worked "normally" ... i.e. upon clicking on a file, an Excel would open along with the file. Please, help !

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  • Does Windows Move command delete the file only on successful completion?

    - by IronicMuffin
    This may be a stupid question, but I'm erring on the side of caution here. If I'm using Windows command line/batch files to Move a file from one server to another and we have a network failure, what will happen to the original file? I would assume it remains untouched until fully moved, and then deleted, but I need to be sure. My fear is that it deletes bytes as they are moved, which would be bad. If that isn't the case, is there a better way than Copying the file and Deleting after the copy completes? Thanks for your help. EDIT: I suppose super user would have been better. This is part of a job kicked off by code, so my first thought was to come here.

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  • How can I modify the BAT file in this post so it will randomly select 1 background contained in a folder containing multiple backgrounds?

    - by Radical924
    Is there a way to modify the bat file from this post here: How do I set the desktop background on Windows from a script? so that it will randomly select 1 background image from a folder containing multiple images??? AND I would also like the background to randomly change to one of the backgrounds randomly contained in the same folder. If this is possible how would I modify the bat file below??? @echo off reg add "hkcu\control panel\desktop" /v wallpaper /t REG_SZ /d "" /f reg add "hkcu\control panel\desktop" /v wallpaper /t REG_SZ /d "C:\[LOCATION OF WALLPAPER HERE]" /f reg delete "hkcu\Software\Microsoft\Internet Explorer\Desktop\General" /v WallpaperStyle /f reg add "hkcu\control panel\desktop" /v WallpaperStyle /t REG_SZ /d 2 /f RUNDLL32.EXE user32.dll,UpdatePerUserSystemParameters exit Also I noticed that this bat file won't work usually (9 times out of 10)... I receive an "ERROR: The system was unable to find the specified registry key or value." I have Windows 7 64-BIT Home Premium Service Pack 1

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  • How to write files in specific order?

    - by Bernie
    Okay, here's a weird problem -- My wife just bought a 2014 Nissan Altima. So, I took her iTunes library and converted the .m4a files to .mp3, since the car audio system only supports .mp3 and .wma. So far so good. Then I copied the files to a DOS FAT-32 formatted USB thumb drive, and connected the drive to the car's USB port, only to find all of the tracks were out of sequence. All tracks begin with a two digit numeric prefix, i.e., 01, 02, 03, etc. So you would think they would be in order. So I called Nissan Connect support and the rep told me that there is a known problem with reading files in the correct order. He said the files are read in the same order they are written. So, I manually copied a few albums with the tracks in a predetermined order, and sure enough he was correct. So I copied about 6 albums for testing, then changed to the top level directory and did a "find . music.txt". Then I passed this file to rsync like this: rsync -av --files-from=music.txt . ../Marys\ Music\ Sequenced/ The files looked like they were copied in order, but when I listed the files in order of modified time, they were in the same sequence as the original files: ../Marys Music Sequenced/Air Supply/Air Supply Greatest Hits ls -1rt 01 Lost In Love.mp3 04 Every Woman In The World.mp3 03 Chances.mp3 02 All Out Of Love.mp3 06 Here I Am (Just When I Thought I Was Over You).mp3 05 The One That You Love.mp3 08 I Want To Give It All.mp3 07 Sweet Dreams.mp3 11 Young Love.mp3 So the question is, how can I copy files listed in a file named music.txt, and copy them to a destination, and ensure the modification times are in the same sequence as the files are listed?

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  • rename files with the same name

    - by snorpey
    Hi. I use the following function to rename thumbnails. For example, if I upload a file called "image.png" to an upload folder, and this folder already has a file named "image.png" in it, the new file automatically gets renamed to "image-copy-1.png". If there also is a file called "image-copy-1.png" it gets renamed to "image-copy-2.png" and so on. The following function returns the new filename. At least that's what it is supposed to do... The renaming doesn't seeem to work correctly, though. Sometimes it produces strange results, like: 1.png 1-copy-1.png 1-copy-2.png 1-copy-2-copy-1.png 1-copy-2-copy-3.png I hope you understand my problem, despite my description being somewhat complex... Can you tell me what went wrong here? (bonus question: Is regular expressions the right tool for doing this kind of stuff?) <?php function renameDuplicates($path, $file) { $fileName = pathinfo($path . $file, PATHINFO_FILENAME); $fileExtension = "." . pathinfo($path . $file, PATHINFO_EXTENSION); if(file_exists($path . $file)) { $fileCopy = $fileName . "-copy-1"; if(file_exists($path . $fileCopy . $fileExtension)) { if ($contains = preg_match_all ("/.*?(copy)(-)(\\d+)/is", $fileCopy, $matches)) { $copyIndex = $matches[3][0]; $fileName = substr($fileCopy, 0, -(strlen("-copy-" . $copyIndex))) . "-copy-" . ($copyIndex + 1); } } else { $fileName .= "-copy-1"; } } $returnValue = $fileName . $fileExtension; return $returnValue; }?>

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  • Several ways to call a windows batch file from another one or from prompt. Which one in which case?

    - by dim
    A windows batch file (called.bat or called.cmd) can be called from another batch file (caller.bat or caller.cmd) or interactive cmd.exe prompt in several ways: direct call: called.bat using call command: call called.bat using cmd command: cmd /c called.bat using start command: start called.bat I'm quite in trouble to differentiate their intended usage based on their help text: when to use which one? e.g. why I might use 'call' command instead of direct call. What's different? I'm interested on some summary report that analyze all 4 possibilities (and others if any missing) from various point of views: recommended use cases for which they are designed to fit, process spawning, execution context, environment, return code processing. Note: I'm using Windows XP SP3.

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  • Best Solution for Load Balancing NFS File Access?

    - by DairyKnight
    I'm trying to find an optimum solution for accessing the NFS file share in my company. We have a central file server in North America and has 30GB~50GB of updated data everyday. And it's very slow for our Europe and Asia branches to access directly. Therefore, I'm trying to setup two replicate servers in those continents. I'm currently using rsync, but wonder if there exists a better solution acts more like a distributed RAID, which allows the user to transparently access the file whether synced or not. And user request will be dispatched to remote server if the file is not yet synced. I'm now looking into DRBD, but it seems not to have the functionality of auto-dispatching requests. Does anyone know if there's a better solution?

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  • Puppet file transfer slow

    - by Noodles
    I have a puppet master and slaves in different datacenters. The latency between them is ~40ms. When I run "puppet agent --test" on a slave to apply the latest manifest it takes ~360 seconds to finish. After doing some digging I can see the main cause of the slow down is file transfers. It seems it's taking ~10 seconds to transfer each file. The files are only small (configuration files) so I can't understand why they would take so long. This is an example of a file in my manifest: file { "/etc/rsyncd.conf" : owner => "root", group => "root", mode => 644, source => "puppet:///files/rsyncd/rsyncd.conf" } Running puppet-profiler I see this: 10.21s - File[/etc/rsyncd.conf] It also seems I cannot update more than one server at once using puppet. If I run two servers at the same time then puppet takes twice as long. I have changed the puppet master from using webrick to mongrel, but this doesn't seem to help. This is making deploying changes painful. A simple config change can take an hour to roll out to all servers.

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  • Corrupt file indicative of corrupt hard drive?

    - by Elipsicon
    I have noticed that two files on my (almost full) 2 TB hard drive have been corrupted. One file has 20 kB (!) corrupted, i.e. consecutive 20 kB have changed, even though the modification date of the file hasn't changed and I haven't worked with this file for over a year. This tells me that something "below" the file system level has messed with the data and the only thing I can think of is hardware failure, most likely hard disk failure. I've tested my RAM already and it works flawlessly. I'm using ext4 on Linux, if that is of any help. Is this normal? Is it time to change my hard drive disk before something worse happens? What can I do to prevent that from happening in the future? Is there some built-in feature of, or extension to ext4 that includes additional error correcting code and/or watches files for changes that haven't been caused by the OS?

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  • Windows File System Analysis

    - by bouvierr
    I am looking for a FREE tool to perform analyses on the NTFS file system of my Windows 7 PC. I want to easily see the amount of data distributed throught out the entire file system. The following applications seem very good, but they are not free and probably overkill for my requirements: FolderSizes 5 MailMeter Windows File System Reporting Tool I am aware that some applications (like Folder Size 2.5) can add a column in Windows Explorer to show the size of each folder, but I am looking for something more like a reporting tool. Thank you for your suggestions.

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  • OSX: Selecting default application for all unknown and different file types (extensions)

    - by Leo
    I work in cluster computing and am using Mac OS X 10.6. I send off hundreds of computing jobs a day, and each one comes back with with a different extension. For example, svmGeneSelect.o12345 which is the std output of my svmGeneSelect job which is job number 12345. I don't control the extensions. All files are plain text. I want OSX to open any file extension that it hasn't seen before with my favorite text editor when I click on it. Or even better set up file association defaults for extension patterns ie textEdit for extensions matching *.o*. I do NOT want to create file associations for individual files since this extension will only ever exist once, and I do not want to go through the process of selecting the application to use for each file. Thanks for any help you can offer.

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  • Difference between sh file.sh and file.sh

    - by RAS
    I have two questions : What is the difference between executing sh filename.sh and filename.sh? How can I make both of them giving me the same output ? I'm asking this question as right now I'm facing a problem. I'm trying to run a Java + SWT application from terminal. When I do filename.sh, it gives me the desired output. But when I do sh filename.sh or bash filename.sh, it throws me an error : Exception in thread "main" java.lang.NoClassDefFoundError: MainForm/java Caused by: java.lang.ClassNotFoundException: MainForm.java at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) Could not find the main class: MainForm.java. Program will exit. I know this question is already asked here but I'm still not clear about it. I have gone through the following links : What is the difference between ./ and sh to run a script? Can scripts run even when they are not set as executable? Can anyone help me with this?

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