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  • "Fatal Error" message during boot process

    - by Denja
    I'm running Ubuntu 10.10 with ATI proprietary FGLRX graphic drivers When I boot, I can see this very quick message appearing; I don't have time to read it: **Fatal Error ..................................**(&@something i cant read) I searched through the log file in /var/log/ in order to find what is wrong and I did find something in the /var/log/Xorg.1.log: 21:31:08 [ 15.734] (--) using VT number 1 [ 204.647] Fatal server error: [ 204.647] xf86OpenConsole: VT_WAITACTIVE failed: Interrupted system call [ 204.647] [ 204.647] Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 204.647] Please also check the log file at "/var/log/Xorg.1.log" for additional information. [ 204.647] But this is already Xorg.1.log. And there is a Xorg.0.log also & Xorg.0.log.old but it doesnt have any error in it. My system seems to work properly and it seems its not affected by this But how do I correct this message? Any suggestions?

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  • Keep trying to install always throws error help!

    - by Hector Soto
    So I was installing 12.10 on my Asus g74sx laptop... Did everything the tutorial told me to do yet I keep getting an error saying that there was an error of input/output.. That I should check the hard drive and see if it needs replacement. I tried with 2 DVDs and did format twice my usb to fat 32 and mounted the image file for 12.10... No idea what is going on. Please help! Mmm I cannot add an image... I'll comment with the link to the error!

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  • Machine check error while booting from USB

    - by javanna
    I put the last Ubuntu iso on my USB stick using UNetBootin, after formatting it to fat32. I've already done that before with other operating systems and it worked. I can't actually boot Ubuntu from USB since I get a black screen with the error "Machine check error" on top the an automatic reboot happens. The error appears right after the boot, I can't see anything else before. I'm using my ASUS K53SV latop. Does anybody know how to solve this?

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  • error:unknown filesystem grub rescue help

    - by Ridvan Çoban
    I'm trying to install ubuntu on my hdd which doesnt contain any operatin system, mbr or grub. (it has 3 partitions, 1st includes my data on ntfs file system, second is linux swap now, and third ex4 filesystem) Of course i don't want to lose my data on ntfs partition. Anyway i installed ubuntu on ex4 filesystem, selected sda as device for bootloader (not sda1,2 or 2). But i got error Error:unknown filesystem Grub rescue I tried ls command. It gives (hd0) , (hd,msdos1), (hd0,msdos2) and (hd0,msdos3). then tried ls (hd0)/, ls (hd0,1)/, ls (hd0,msdos2)/, ls (hd0,msdos3)/ to find the linux filesystem to boot. But i was unsuccessful. it all gave me unknown filesystem error. Am i missing or something?

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  • Fatal Error when booting

    - by Denja
    I'm running Ubuntu 10.10 with ATI proprietary FGLRX graphic drivers When I boot, I can see this very quick message appearing; I don't have time to read it: **Fatal Error ..................................**(&@something i cant read) I searched through the log file in /var/log/ in order to find what is wrong and I did find something in the /var/log/Xorg.1.log: 21:31:08 [ 15.734] (--) using VT number 1 [ 204.647] Fatal server error: [ 204.647] xf86OpenConsole: VT_WAITACTIVE failed: Interrupted system call [ 204.647] [ 204.647] Please consult the The X.Org Foundation support at http://wiki.x.org for help. [ 204.647] Please also check the log file at "/var/log/Xorg.1.log" for additional information. [ 204.647] But this is already Xorg.1.log. And there is a Xorg.0.log also & Xorg.0.log.old but it doesnt have any error in it. My system seems to work properly and it seems its not affected by this But how do I correct this message? Any suggestions?

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  • Error when I compile kernel 3.3.2 in ubuntu 12.04

    - by rock-alternativo
    I thinks is not a bug of ubuntu. This is the output: OBJCOPY arch/x86/boot/vmlinux.bin HOSTCC arch/x86/boot/tools/build BUILD arch/x86/boot/bzImage Setup is 16800 bytes (padded to 16896 bytes). System is 4599 kB CRC f77d64c0 Kernel: arch/x86/boot/bzImage is ready (#1) Building modules, stage 2. MODPOST 3268 modules ERROR: "__modver_version_show" [drivers/staging/rts5139/rts5139.ko] undefined! WARNING: modpost: Found 4 section mismatch(es). To see full details build your kernel with: 'make CONFIG_DEBUG_SECTION_MISMATCH=y' make[1]: *** [__modpost] Error 1 make: *** [modules] Error 2

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  • Silverlight 3.0 and ADO.NET data service framework(An error occurred while processing this request)

    - by ybbest
    Today , I try to write a Silverlight app that talks to SharePoint 2010 using the REST API.However after deploy the silverlight app and run the code , I got the following error.In order to fix this I need to make the target framework of your caller application to 4.0,in this case I need to use Silverlight 4.0 instead 3.0.After I have done that and redeploy the solution to the SharePoint.It works like a charm.   Exceptions details: System.Data.Services.Client.DataServiceQueryException: An error occurred while processing this request. Request version ’1.0′ is too low for the response. The lowest supported version is ’2.0′. However , if you got the error like this: Could not load type ‘System.Data.Services.Providers.IDataServiceUpdateProvider’ from assembly ‘System.Data.Services, Version=3.5.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089′,then you need to install ADO.NET Data Services Update for .NET Framework 3.5 SP1 ,you can download here (for windowns 7 and server 2008 r2 ) or here (for windows vista of server 2008).

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  • Visual Basic 2010 Listbox Error [migrated]

    - by stargaze07
    what is the meaning of this error? sorry it's my first time to use Visual basic 2010, I'm not familiar with this kind of error, I use this for selecting all the files in the listbox and tried to move or copy to another listbox in other form. Error 1 'ToArray' is not a member of 'System.Windows.Forms.ListBox.ObjectCollection'. This is the code I use. Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click If RadioButton1.Checked Then Dim itemsToMove = ListBox1.Items.ToArray() For Each item In itemsToMove Form2.lstP.Items.Add(item) ListBox1.Items.Remove(item) Next Form2.Show() End If End Sub Can someone help me with this?

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  • error when installing rmagic gem on Ubuntu 12.04 for Ruby on Rails

    - by PeaceDefender
    0 down vote favorite I am trying to get my Ruby on Rails application working and installing RMagic gem. But I get an error that says "Can't install RMagick 2.13.1. Can't find the ImageMagick library or one of the dependent libraries." Altough I have ImageMagick installed with its dependences. Terminal log : http://pastebin.com/vcgkbwZR I even tried to installed RMagic from Synaptic, but I get the same error when I run "bundle" command. Through my search, some people had problem with lib dependencies, but I believed I have them all installed. Another solution I found is this ( error installing RMagick from gem ) a little bit old and not sure if it is going to work for 12.04. BUT, I don't know where those configurations should go.

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  • Programming error in 'aptdaemon' [closed]

    - by Real
    Using Ubuntu 11.10 While performing updates through the update manager I get the following message: An unhandlable error occured There seems to be a programming error in aptdaemon, the software that allows you to install/remove software and to perform other package management related tasks. Details Traceback (most recent call last): File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 968, in simulate trans.unauthenticated = self._simulate_helper(trans) File "/usr/lib/python2.7/dist-packages/aptdaemon/worker.py", line 1092, in _simulate_helper return depends, self._cache.required_download, \ File "/usr/lib/python2.7/dist-packages/apt/cache.py", line 235, in required_download pm.get_archives(fetcher, self._list, self._records) SystemError: E:Method has died unexpectedly!, E:Sub-process returned an error code (100), E:Method /usr/lib/apt/methods/ did not start correctly Tried some of the fixes that were posted but did not work. What shall I do to fix this issue?

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  • "Sorry, Ubuntu 12.04 has experienced an internal error."

    - by malapradej
    I have recently upgraded to Precise and had some errors. It seems to be quite random and with differences in the error reports. I have duly sent the reports hoping the system will have found the problem and sorted itself out. After the second error I am following the wizards (software...) advice and seeking help. The 1st time it happened I jotted down the following: ExecutablePath /usr/lib/tracker/tracker-extract LaunchPad bug 950765 AMD64 The second time the following: ExecutablePath /usr/share/appart/appart-gpu-error-intel.py "Possible GPU hang........" sandybridge-m-gt2 LaunchPad bug 981261 If there is anyone that can help it is much appreciated. I did not really want to upgrade at this stage, but was forced to due to the latest version of python-numpy in precise. You win some, you loose some.... Jacques I am using a Pavilion dv6 notebook and 64bit ubuntu 12.04 LTS

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  • Kernel Error When Upgrade 12.10 - VMWare has install in 12.04

    - by sepdau
    I have already upgraded Ubuntu 12.10 from 12.04. I have remove old kernel 3.2.21 in 12.04 ver. On my starting up it have error before login I see a error "vmware ...." In 12.04 I have install vmware 9.0 and in 12.10 when I open vmware workstation to start a virtual machine it error my monito going to black and I must logout and login angain. How to fix it? I related to vmware and kernel or not. Thank for helping!

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  • Machine check error on ASUS while booting from USB

    - by user100453
    I put the last Ubuntu iso on my USB stick using UNetBootin, after formatting it to fat32. I've already done that before with other operating systems and it worked. I can't actually boot Ubuntu from USB since I get a black screen with the error "Machine check error" on top the an automatic reboot happens. The error appears right after the boot, I can't see anything else before. I'm using my ASUS X54L latop. Does anybody know how to solve this? Installation from CD/DVD works.

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  • Fast string suffix checking in C# (.NET 4.0)?

    - by ilitirit
    What is the fastest method of checking string suffixes in C#? I need to check each string in a large list (anywhere from 5000 to 100000 items) for a particular term. The term is guaranteed never to be embedded within the string. In other words, if the string contains the term, it will be at the end of the string. The string is also guaranteed to be longer than the suffix. Cultural information is not important. These are how different methods performed against 100000 strings (half of them have the suffix): 1. Substring Comparison - 13.60ms 2. String.Contains - 22.33ms 3. CompareInfo.IsSuffix - 24.60ms 4. String.EndsWith - 29.08ms 5. String.LastIndexOf - 30.68ms These are average times. [Edit] Forgot to mention that the strings also get put into separate lists, but this is not important. It does add to the running time though. On my system substring comparison (extracting the end of the string using the String.Substring method and comparing it to the suffix term) is consistently the fastest when tested against 100000 strings. The problem with using substring comparison though is that Garbage Collection can slow it down considerably (more than the other methods) because String.Substring creates new strings. The effect is not as bad in .NET 4.0 as it was in 3.5 and below, but it is still noticeable. In my tests, String.Substring performed consistently slower on sets of 12000-13000 strings. This will obviously differ between systems and implementations. [EDIT] Benchmark code: http://pastebin.com/smEtYNYN

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  • Launch ClickOnce via URL but not checking for updates

    - by Jeff Kotula
    I have a ClickOnce app that is frequently launched from another application via a URL. The URL includes some command-line arguments that load data, etc. Since the frequency of launching the app is so high, I want to cut out the check for version updates. So I implemented my own checking through the ApplicationDeployment class to avoid it. It works fine if you launch from the Start Menu once the app is installed. However, we also want to preserve the launch via URL behavior because it is advantageous in so many ways. But when launching via URL, the update check is always performed -- it seems IE isn't smart enough to look for the app in the local download area to see if it is already installed or not... Does anyone know of a way to get the "don't check for updates automatically" behavior while still using the URL launch mechanism? Actually, it looks like the issue is a Catch-22 in the ClickOnce model. If you launch with a URL, IE will always touch base with the host and check the version, updating if necessary, regardless of whether or not the app is flagged as "Don't check version". However, if you launch from the Start Menu, ClickOnce disables command-line arguments. Has anyone found any way around this, or know of a MS plan to fix it?

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  • Checking for valid email addresses

    - by Roland
    I'm running a website with more than 60 000 registered users. Every week notifications are send to these users via email, now I've noticed some of the mail addresses do not exists anymore eg. the domain address is valid but the email name en asdas@ is not valid anymore since person does not work at a company anymore etc. Now I'm looping through the database and doing some regular expression checks and checking if the MX records exist with the following two functions function verify_email($email){ if(!preg_match('/^[_A-z0-9-]+((\.|\+)[_A-z0-9-]+)*@[A-z0-9-]+(\.[A-z0-9-]+)*(\.[A-z]{2,4})$/',$email)){ return false; } else { return true; } } // Our function to verify the MX records function verify_email_dns($email){ list($name, $domain) = split('@',$email); if(!checkdnsrr($domain,'MX')){ return false; } else { return true; } } If the email address is in an invalid format or the domain does not exists I delete the users account. Are there any methods I could use to check if the email address still exists or not if the domain name is valid and the email address is in the correct format? For example [email protected] does not exist anymore but test.com is a valid domain name.

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  • Statically checking a Java app for link errors

    - by monorailkitty
    I have a scenario where I have code written against version 1 of a library but I want to ship version 2 of the library instead. The code has shipped and is therefore not changeable. I'm concerned that it might try to access classes or members of the library that existed in v1 but have been removed in v2. I figured it would be possible to write a tool to do a simple check to see if the code will link against the newer version of the library. I appreciate that the code may still be very broken even if the code links. I am thinking about this from the other side - if the code won't link then I can be sure there is a problem. As far as I can see, I need to run through the bytecode checking for references, method calls and field accesses to library classes then use reflection to check whether the class/member exists. I have three-fold question: (1) Does such a tool exist already? (2) I have a niggling feeling it is much more complicated that I imagine and that I have missed something major - is that the case? (3) Do you know of a handy library that would allow me to inspect the bytecode such that I can find the method calls, references etc.? Thanks!

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  • Core Data migration failing with error: Failed to save new store after first pass of migration

    - by unforgiven
    In the past I had already implemented successfully automatic migration from version 1 of my data model to version 2. Now, using SDK 3.1.3, migrating from version 2 to version 3 fails with the following error: Unresolved error Error Domain=NSCocoaErrorDomain Code=134110 UserInfo=0x5363360 "Operation could not be completed. (Cocoa error 134110.)", { NSUnderlyingError = Error Domain=NSCocoaErrorDomain Code=256 UserInfo=0x53622b0 "Operation could not be completed. (Cocoa error 256.)"; reason = "Failed to save new store after first pass of migration."; } I have tried automatic migration using NSMigratePersistentStoresAutomaticallyOption and NSInferMappingModelAutomaticallyOption and also migration using only NSMigratePersistentStoresAutomaticallyOption, providing a mapping model from v2 to v3. I see the above error logged, and no object is available in the application. However, if I quit the application and reopen it, everything is in place and working. The Core Data methods I am using are the following ones - (NSManagedObjectModel *)managedObjectModel { if (managedObjectModel != nil) { return managedObjectModel; } NSString *path = [[NSBundle mainBundle] pathForResource:@"MYAPP" ofType:@"momd"]; NSURL *momURL = [NSURL fileURLWithPath:path]; managedObjectModel = [[NSManagedObjectModel alloc] initWithContentsOfURL:momURL]; return managedObjectModel; } - (NSManagedObjectContext *) managedObjectContext { if (managedObjectContext != nil) { return managedObjectContext; } NSPersistentStoreCoordinator *coordinator = [self persistentStoreCoordinator]; if (coordinator != nil) { managedObjectContext = [[NSManagedObjectContext alloc] init]; [managedObjectContext setPersistentStoreCoordinator: coordinator]; } return managedObjectContext; } - (NSPersistentStoreCoordinator *)persistentStoreCoordinator { if (persistentStoreCoordinator != nil) { return persistentStoreCoordinator; } NSURL *storeUrl = [NSURL fileURLWithPath: [[self applicationDocumentsDirectory] stringByAppendingPathComponent: @"MYAPP.sqlite"]]; NSDictionary *options = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithBool:YES], NSMigratePersistentStoresAutomaticallyOption, [NSNumber numberWithBool:YES], NSInferMappingModelAutomaticallyOption, nil]; NSError *error = nil; persistentStoreCoordinator = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel: [self managedObjectModel]]; if (![persistentStoreCoordinator addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:storeUrl options:options error:&error]) { // Handle error NSLog(@"Unresolved error %@, %@", error, [error userInfo]); } return persistentStoreCoordinator; } In the simulator, I see that this generates a MYAPP~.sqlite files and a MYAPP.sqlite file. I tried to remove the MYAPP~.sqlite file, but BOOL oldExists = [[NSFileManager defaultManager] fileExistsAtPath: [[self applicationDocumentsDirectory] stringByAppendingPathComponent: @"MYAPP~.sqlite"]]; always returns NO. Any clue? Am I doing something wrong? Thank you in advance.

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  • IF adding new Entity gives error me : EntityCommandCompilationException was unhandled bu user code

    - by programmerist
    i have 5 tables in started projects. if i adds new table (Urun enttiy) writing below codes: project.BAL : public static List<Urun> GetUrun() { using (GenoTipSatisEntities genSatisUrunCtx = new GenoTipSatisEntities()) { ObjectQuery<Urun> urun = genSatisUrunCtx.Urun; return urun.ToList(); } } if i receive data form BAL in UI.aspx: using project.BAL; namespace GenoTip.Web.ContentPages.Satis { public partial class SatisUrun : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { FillUrun(); } } void FillUrun() { ddlUrun.DataSource = SatisServices.GetUrun(); ddlUrun.DataValueField = "ID"; ddlUrun.DataTextField = "Ad"; ddlUrun.DataBind(); } } } i added URun later. error appears ToList method: EntityCommandCompilationException was unhandled bu user code error Detail: Error 1 Error 3007: Problem in Mapping Fragments starting at lines 659, 873: Non-Primary-Key column(s) [UrunID] are being mapped in both fragments to different conceptual side properties - data inconsistency is possible because the corresponding conceptual side properties can be independently modified. C:\Users\pc\Desktop\GenoTip.Satis\GenoTip.DAL\ModelSatis.edmx 660 15 GenoTip.DAL Error 2 Error 3012: Problem in Mapping Fragments starting at lines 659, 873: Data loss is possible in FaturaDetay.UrunID. An Entity with Key (PK) will not round-trip when: (PK does NOT play Role 'FaturaDetay' in AssociationSet 'FK_FaturaDetay_Urun' AND PK is in 'FaturaDetay' EntitySet) C:\Users\pc\Desktop\GenoTip.Satis\GenoTip.DAL\ModelSatis.edmx 874 11 GenoTip.DAL Error 3 Error 3012: Problem in Mapping Fragments starting at lines 659, 873: Data loss is possible in FaturaDetay.UrunID. An Entity with Key (PK) will not round-trip when: (PK is in 'FaturaDetay' EntitySet AND PK does NOT play Role 'FaturaDetay' in AssociationSet 'FK_FaturaDetay_Urun' AND Entity.UrunID is not NULL) C:\Users\pc\Desktop\GenoTip.Satis\GenoTip.DAL\ModelSatis.edmx 660 15 GenoTip.DAL Error 4 Error 3007: Problem in Mapping Fragments starting at lines 748, 879: Non-Primary-Key column(s) [UrunID] are being mapped in both fragments to different conceptual side properties - data inconsistency is possible because the corresponding conceptual side properties can be independently modified. C:\Users\pc\Desktop\GenoTip.Satis\GenoTip.DAL\ModelSatis.edmx 749 15 GenoTip.DAL Error 5 Error 3012: Problem in Mapping Fragments starting at lines 748, 879: Data loss is possible in Satis.UrunID. An Entity with Key (PK) will not round-trip when: (PK does NOT play Role 'Satis' in AssociationSet 'FK_Satis_Urun' AND PK is in 'Satis' EntitySet) C:\Users\pc\Desktop\GenoTip.Satis\GenoTip.DAL\ModelSatis.edmx 880 11 GenoTip.DAL Error 6 Error 3012: Problem in Mapping Fragments starting at lines 748, 879: Data loss is possible in Satis.UrunID. An Entity with Key (PK) will not round-trip when: (PK is in 'Satis' EntitySet AND PK does NOT play Role 'Satis' in AssociationSet 'FK_Satis_Urun' AND Entity.UrunID is not NULL) C:\Users\pc\Desktop\GenoTip.Satis\GenoTip.DAL\ModelSatis.edmx 749 15 GenoTip.DAL

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  • glibc Heap Consistency Checking

    - by idimba
    According to posts from 2008 (I can't find it right now), glibc heap check doesn't work in multithreaded environment. Is it still situation now in 2010? Does heap check enabled by default? (gcc 4.1.2)? I don't set MALLOC_CHECK_, don't aware of calling mcheck(), but still sometimes receive double free glibc error with backtrace. Maybe it's enabled by some ccompilation flag?

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  • Stuck on an ASP.NET/WCF WSDL Parsing Error

    - by Vaccano
    I have a WCF Web Service that my ASP.NET app uses. It has been working fine for quite some time. I just added in a Dev Express Grid (and the Dev Express DLLs) and a new page that uses them and now I am getting parsing errors on the WSDL. But the weird part is that it works fine on my machine but fails on the web server machine. (Both are connecting to the same web services WSDL.) Here is the error message I am getting: Server Error in '/MyWebAppWebDev' Application. -------------------------------------------------------------------------------- Parser Error Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately. Parser Error Message: Reference.svcmap: Failed to generate code for the service reference 'MyWebAppService'. Cannot import wsdl:portType Detail: An exception was thrown while running a WSDL import extension: System.ServiceModel.Description.DataContractSerializerMessageContractImporter Error: Referenced type 'WebClientApp.MyWebAppService.ReferenceUpdatesDataContract, WebClientApp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null' with data contract name 'ReferenceUpdatesDataContract' in namespace 'http://schemas.datacontract.org/2004/07/MyWebAppServiceLibrary.DataContracts' cannot be used since it does not match imported DataContract. Need to exclude this type from referenced types. XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:portType[@name='IMyWebAppReferenceDataServiceLib'] Cannot import wsdl:binding Detail: There was an error importing a wsdl:portType that the wsdl:binding is dependent on. XPath to wsdl:portType: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:portType[@name='IMyWebAppReferenceDataServiceLib'] XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='MyWebAppServicesDefaultEndpoint'] Cannot import wsdl:port Detail: There was an error importing a wsdl:binding that the wsdl:port is dependent on. XPath to wsdl:binding: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:binding[@name='MyWebAppServicesDefaultEndpoint'] XPath to Error Source: //wsdl:definitions[@targetNamespace='http://tempuri.org/']/wsdl:service[@name='MyWebAppReferenceDataServiceLib']/wsdl:port[@name='MyWebAppServicesDefaultEndpoint'] Source Error: [No relevant source lines] Source File: /MyWebAppWebDev/App_WebReferences/MyWebAppService/ Line: 1 I am completely stumped on this. I have checked my web.config endpoint address and it is spot on (and notably is not in the error message above). Any ideas would be welcomed. Things I have tried: Giving permissions to C:\Windows\temp to my Website user name Giving permissions to C:\Windows\temp to my App pool user name Checking to see that none of my data contracts are generic and have IsReference=true in them.

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  • Checking if a record in datareader is NULL

    - by user279521
    I have browsed thru other postings on S/O, but I can't find a solution that works for me. I have a datareader that might return a null value, and if so, I want to value to equal blank txtMiddleName.Text = rdrGetUserInfo.GetString(1) ?? ""; The string above does not work. When I walk thru the code, the code jumps to my error trapping block; Any ideas?

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  • Checking an empty Core Data relationship (SQLite)

    - by rwat
    I have a to-many relationship in my data model, and I'd like to get all the objects that have no corresponding objects in the relationship. For example: Customer - Purchases I want to get all Customers that have 0 Purchases. I've read somewhere that I could use "Purchases[SIZE] = 0", but this gives me an unsupported function expression error, which I think means it doesn't work with a SQLite backing store (which I don't want to switch from, due to some performance constraints). Any ideas?

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  • [bash] checking wget's return value [if]

    - by wwrob
    I'm writing a script to download a bunch of files, and I want it to inform when a particular file doesn't exist. r=`wget -q www.someurl.com` if [ $r -ne 0 ] then echo "Not there" else echo "OK" fi But it gives the following error on execution: ./file: line 2: [: -ne: unary operator expected What's wrong?

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