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  • R: Removing object from parent environment using rm()

    - by user151410
    Hi, I am trying to remove an object from the parent environment. rm_obj <- function(obj){ a <-deparse(substitute(obj)) print (a) print(ls(envir=sys.frame(-1))) rm(a,envir=sys.frame(-1)) } > x<-c(1,2,3) > rm_obj(x) [1] "x" [1] "rm_obj" "x" Warning message: In rm(a, envir = sys.frame(-1)) : object 'a' not found This will help clarify my misunderstanding regarding frames. Thanks in advance, Russ

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  • Removing a file from TortoiseHG data source

    - by Hossein Margani
    Hi! I am using TortoiseHG for source code control in Windows, I forgot to edit the ".hgignor" file, and now I have a huge folder ".hg" which I know it's because of DLL and EXE and PDB files which I do not need them. Now changing the ignor file does not remove those files. What should I do for deleting these files completely from my TortoiseHg data source? Thank you.

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  • removing elements incrementally from a list

    - by Javier
    Dear all, I've a list of float numbers and I would like to delete incrementally a set of elements in a given range of indexes, sth. like: for j in range(beginIndex, endIndex+1): print ("remove [%d] => val: %g" % (j, myList[j])) del myList[j] However, since I'm iterating over the same list, the indexes (range) are not valid any more for the new list. Does anybody has some suggestions on how to delete the elements properly? Best wishes

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  • Can I safely remove pre-installed software in Ubuntu 13.10?

    - by Andzt
    I uses a lots of Google Apps Product in my Laptop, Tablet and Mobile. Since I never use all pre-installed software in Ubuntu, can I remove it? E.g like: LibreOffice | I use Google Doc etc. RhythmBox | I use Google Play Music Thunderbird | I use Gmail, don't like client Videos | Watch online Messaging | Hangouts And other softwares like Remmina Client, BitTorrent Client. Can I simply remove it in Ubuntu Software Centre? I like my Laptop clean and having unmessy software that I never use. I normally use Chromium Browser to do all the stuff, I think I am heavy user of Google, and love the simplicity of Ubuntu. Lol! Can anyone tell or guide me? Thanks!

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  • how to remove an entry from system tray?

    - by altvali
    I've searched for an answer to this one and I haven't found one yet. How do i remove a single item from Windows' System tray? I'm targeting Windows XP. Edit: This is not about preventing items from starting up. I want the program to keep running, I just need another script/program to remove the first one's entry from system tray. Second Edit: One approach that I can think of is to try to hide the intended app by modifying registry keys. On several test machines I've found some registry entries that match the System tray information at HKEY_USERS\something-that-looks-like S-1-5-21-682003330-1563985344-725345543-1003\Software\Microsoft\Windows\CurrentVersion\Explorer\TrayNotify with BalloonTip, IconStream and PastIconsStream containing systray information. The important one is IconStream. On other machines, these are found at hkey_classes_root/local/setting/software/microsoft/windows/currentversion/TrayNotify I'm quite sure there's no danger in changing those specific registries, but I don't know how to write code for that. Can anyone help me with the code and with confirming if this has the desired effect of hiding the systray icon for an active program?

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  • stdio's remove() not always deleting on time.

    - by Kyte
    For a particular piece of homework, I'm implementing a basic data storage system using sequential files under standard C, which cannot load more than 1 record at a time. So, the basic part is creating a new file where the results of whatever we do with the original records are stored. The previous file's renamed, and a new one under the working name is created. The code's compiled with MinGW 5.1.6 on Windows 7. Problem is, this particular version of the code (I've got nearly-identical versions of this floating around my functions) doesn't always remove the old file, so the rename fails and hence the stored data gets wiped by the fopen(). FILE *archivo, *antiguo; remove("IndiceNecesidades.old"); // This randomly fails to work in time. rename("IndiceNecesidades.dat", "IndiceNecesidades.old"); // So rename() fails. antiguo = fopen("IndiceNecesidades.old", "rb"); // But apparently it still gets deleted, since this turns out null (and I never find the .old in my working folder after the program's done). archivo = fopen("IndiceNecesidades.dat", "wb"); // And here the data gets wiped. Basically, anytime the .old previously exists, there's a chance it's not removed in time for the rename() to take effect successfully. No possible name conflicts both internally and externally. The weird thing's that it's only with this particular file. Identical snippets except with the name changed to Necesidades.dat (which happen in 3 different functions) work perfectly fine. // I'm yet to see this snippet fail. FILE *antiguo, *archivo; remove("Necesidades.old"); rename("Necesidades.dat", "Necesidades.old"); antiguo = fopen("Necesidades.old", "rb"); archivo = fopen("Necesidades.dat", "wb"); Any ideas on why would this happen, and/or how can I ensure the remove() command has taken effect by the time rename() is executed? (I thought of just using a while loop to force call remove() again so long as fopen() returns a non-null pointer, but that sounds like begging for a crash due to overflowing the OS with delete requests or something.)

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  • Loop through multi-dimensional array and remove certain keys

    - by Webkungen
    Hi! I've got a nested tree structure which is based on the array below: Array ( [1] = Array ( [id] = 1 [parent] = 0 [name] = Startpage [uri] = 125 [basename] = index.php [child] = ) [23] = Array ( [id] = 23 [parent] = 0 [name] = Events [uri] = 0 [basename] = [child] = Array ( [24] = Array ( [id] = 24 [parent] = 23 [name] = Public news [uri] = 0 [basename] = [child] = Array ( [27] = Array ( [id] = 27 [parent] = 24 [name] = Add [uri] = 100 [basename] = news.public.add.php [child] = ) [28] = Array ( [id] = 28 [parent] = 24 [name] = Overview [uri] = 101 [basename] = news.public.overview.php [child] = ) ) ) [25] = Array ( [id] = 25 [parent] = 23 [name] = Private news [uri] = 0 [basename] = [child] = Array ( [29] = Array ( [id] = 29 [parent] = 25 [name] = Add [uri] = 67 [basename] = news.private.add.php [child] = ) [30] = Array ( [id] = 30 [parent] = 25 [name] = Overview [uri] = 68 [basename] = news.private.overview.php [child] = ) ) ) [26] = Array ( [id] = 26 [parent] = 23 [name] = Calendar [uri] = 0 [basename] = [child] = Array ( [31] = Array ( [id] = 31 [parent] = 26 [name] = Add [uri] = 69 [basename] = news.event.add.php [child] = ) [32] = Array ( [id] = 32 [parent] = 26 [name] = Overview [uri] = 70 [basename] = news.event.overview.php [child] = ) ) ) ) ) ) I'm looking for a function to loop (recursive?) through the array and remove some keys. I my system I can allow users to certain functions/pages and if I deny access to the whole "block" "Events", the array will look like this: Array ( [1] = Array ( [id] = 1 [parent] = 0 [name] = Startpage [uri] = 125 [basename] = index.php [child] = ) [23] = Array ( [id] = 23 [parent] = 0 [name] = Events [uri] = 0 [basename] = [child] = Array ( [24] = Array ( [id] = 24 [parent] = 23 [name] = Public news [uri] = 0 [basename] = [child] = ) [25] = Array ( [id] = 25 [parent] = 23 [name] = Private news [uri] = 0 [basename] = [child] = ) [26] = Array ( [id] = 26 [parent] = 23 [name] = Calendar [uri] = 0 [basename] = [child] = ) ) ) ) As you can see above, the whole "block" "Events" is useless right now, becuase there is no page associated with each option. So I need to find all "keys" where "basename" is null AND where child is not an array or where the array is empty and remove them. I found this function when searching the site: function searchAndDestroy(&$a, $key, $val){ foreach($a as $k = &$v){ if(is_array($v)){ $r = searchAndDestroy($v, $key, $val); if($r){ unset($a[$k]); } }elseif($key == $k && $val == $v){ return true; } } return false; } It can be used to remove a key any where in the array, but only based in one thing, for example remove all keys where "parent" equals "23". But I need to find and remove (unset) all keys where "basename" is null AND where child isn't an array or where the array is empty. Can anyone help me out and possibly tweak the function above? Thank you,

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  • How to simply remove everything from a directory on Linux

    - by Tometzky
    How to simply remove everything from a current or specified directory on Linux? Several approaches: rm -fr * rm -fr dirname/* Does not work — it will leave hidden files — the one's that start with a dot, and files starting with a dash in current dir, and will not work with too many files rm -fr -- * rm -fr -- dirname/* Does not work — it will leave hidden files and will not work with too many files rm -fr -- * .* rm -fr -- dirname/* dirname/.* Don't try this — it will also remove a parent directory, because ".." also starts with a "." rm -fr * .??* rm -fr dirname/* dirname/.??* Does not work — it will leave files like ".a", ".b" etc., and will not work with too many files find -mindepth 1 -maxdepth 1 -print0 | xargs -0 rm -fr find dirname -mindepth 1 -maxdepth 1 -print0 | xargs -0 rm -fr As far as I know correct but not simple. find -delete find dirname -delete AFAIK correct for current directory, but used with specified directory will delete that directory also. find -mindepth 1 -delete find dirname -mindeph 1 -delete AFAIK correct, but is it the simplest way?

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  • iptables captive portal remove user

    - by Burgos
    I followed this guide: http://aryo.info/labs/captive-portal-using-php-and-iptables.html I am implementing captive portal using iptables. I've setup web server and iptables on linux router, and everything is working as it should. I can allow user to access internet with sudo iptables -I internet -t mangle -m mac --mac-source USER_MAC_ADDRESS -j RETURN and I can remove access with sudo iptables -D internet -t mangle -m mac --mac-source USER_MAC_ADDRESS -j RETURN However, on removal, user can still open last viewed page as many times he wants (if he restart his Ethernet adapter, future connections will be closed). On blog page I found a script /usr/sbin/conntrack -L \ |grep $1 \ |grep ESTAB \ |grep 'dport=80' \ |awk \ "{ system(\"conntrack -D --orig-src $1 --orig-dst \" \ substr(\$6,5) \" -p tcp --orig-port-src \" substr(\$7,7) \" \ --orig-port-dst 80\"); }" Which should remove their "redirection" connection track, as it is written, but when I execute that script, nothing happens - user still have access to that page. When I execute /usr/sbin/conntrack -L | grep USER_IP after executing script I am having nothing returned, so my questions: Is there anything else that can help me clean these track? Obviously - I can't reset nor mine, nor users network adapter.

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  • Removing python and then re-installing on Mac OSX

    - by JudoWill
    I was wondering if anyone had tips on how to completely remove a python installation form Mac OSX (10.5.8) ... including virtual environments and its related binaries. Over the past few years I've completely messed up the installed site-packages, virtual-environments, etc. and the only way I can see to fix it is to just uninstall everything and re-install. I'd like to completely re-do everything and use virtualenv, pip, etc. from the beginning. On the other hand if anyone knows a way to do this without removing python and re-installing I'd be happy to here about it. Thanks, Will

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  • Unable to remove invalid(orphaned?) SPNs

    - by Brent
    tldr version: Renamed domain from internal.domain.com to domain.com, have 4 SPNs that am unable to remove from DC. So my domain was internal.domain-name.com and I renamed it to domain-name.com and I thought everything was good. Several days later, I start setting up my RD Gateway and am noticing issues surrounding group policy. I run dcdiag and the SystemLog part fails. Starting test: SystemLog A warning event occurred. EventID: 0x00001796 Time Generated: 08/25/2014 02:48:30 Event String: Microsoft Windows Server has detected that NTLM authentication is presently being used between clients and this server. This event occurs once per boot of the server on the first time a client uses NTLM with this server. An error event occurred. EventID: 0xC0001B70 Time Generated: 08/25/2014 02:49:18 Event String: The SQL Server (MSSQLSERVER) service terminated with the following service-specific error: An error event occurred. EventID: 0xC0001B70 Time Generated: 08/25/2014 02:49:48 Event String: The SQL Server (MSSQLSERVER) service terminated with the following service-specific error: An error event occurred. EventID: 0xC0001B70 Time Generated: 08/25/2014 02:52:47 Event String: The SQL Server (MSSQLSERVER) service terminated with the following service-specific error: This made me check my AD for possible connections to the .internal domain. I found four which I remove by: setspn -D E3514235-4B06-11D1-AB04-00C04FC2DCD2/d79fa59c-74ad-4610-a5e6-b71866c7a157/internal.domain-name.com ServerName setspn -D HOST/ServerName.domain-name.com/internal.domain-name.com ServerName setspn -D GC/ServerName.domain-name.com/internal.domain-name.com ServerName setspn -D ldap/ServerName.domain-name.com/internal.domain-name.com ServerName Also, checking my dns records, there's an internal subdomain that I can delete but it comes back as well. I've tried removing the spns to no avail. Is there something I'm missing?

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  • Exception during iteration on collection and remove items from that collection

    - by Muhammad Kashif Nadeem
    I remove item from ArrayList in foreach loop and get follwing exception. Collection was modified; enumeration operation may not execute. How can I remove items in foreach Following is my code: /* * Need to remove all items from 'attachementsFielPath' which does not exist in names array. */ try { string attachmentFileNames = txtAttachment.Text.Trim(); // Textbox having file names. string[] names = attachmentFileNames.Split(new char[] { ';' }); int index = 0; // attachmentsFilePath is ArrayList holding full path of fiels user selected at any time. foreach (var fullFilePath in attachmentsFilePath) { bool isNeedToRemove = true; // Extract filename from full path. string fileName = fullFilePath.ToString().Substring(fullFilePath.ToString().LastIndexOf('\\') + 1); for (int i = 0; i < names.Length; i++) { // If filename found in array then no need to check remaining items. if (fileName.Equals(names[i].Trim())) { isNeedToRemove = false; break; } } // If file not found in names array, remove it. if (isNeedToRemove) { attachmentsFilePath.RemoveAt(index); isNeedToRemove = true; } index++; } } catch (Exception ex) { throw ex; }

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  • Question on MacPorts comment: "manually remove the catalog entry for this port when you uninstall it

    I was recently installing Inkscape with MacPorts through a Mac OSX Leopard Terminal using "sudo port install inkscape" And during the search-and-download for dependencies, many of these type of comments were printed: ###################################################################### # As MacPorts does not currently have a post-deactivate hook, # you will need to ensure that you manually remove the catalog # entry for this port when you uninstall it. To do so, run # "xmlcatmgr remove nextCatalog /opt/local/share/xsl/docbook-xsl/catalog.xml". ###################################################################### Can anyone tell me what this message means? I do not understand what "it" refers to in the phrase 'ensure that you manually remove the catalog entry for this port when you uninstall it'. Does 'it' refer to a 'this port'? How is a port uninstalled? Mostly: When will I have to manually remove the catalog entry using the provided command? Also, what is a catalog entry? is that what appears when I type "sudo port search inkscape" ? I am kind of a MacPorts install n00b. Thanks very much for your time.

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  • jQuery inconsistent .remove by class on element with multiple classes

    - by pedalpete
    I've got a page where messages and associated elements (responses, forwards, etc) all share a class based on the database id of the parent. For example this is a message this is another message this is a comment this is another comment tim posted a new message sara forwarded a message to john at times I need to remove all elements with the same id, so I originally had jQuery('div#'+id).remove(); but that would sometimes not remove all the ids because ids are supposed to be unique. So I added the id as a class. now I use jQuery('div.'+id).remove(); but this seems to be about 80% effective, and sometimes the divs aren't being removed. I'm not sure if the issue is because the div has more than one class, but I need the classes because that is how I refer to the elements when somebody clicks. For instance, jQuery('div.message').click(function(){ get the id, send it to the server and get the message }); is there something wrong I'm doing here? or is there a better way to do this?

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  • Remove second class from an element and add another class

    - by rahul
    Hi, $(document).ready ( function () { $(".MenuItem").mouseover ( function () { // Remove second class and add another class [ Maintain MenuItem class ] // Eg: For div1 remove Sprite1 and then add Sprite1Dis and for div2 // remove Sprite2 and add Spprite2Dis }); $(".MenuItem").mouseout ( function () { // Reverse of mouseover. ie Remove Sprite1Dis and add Sprite1 }); }); <div id="div1" class="MenuItem Sprite1"> &nbsp; </div> <div id="div2" class="MenuItem Sprite2"> &nbsp; </div> <div id="div3" class="MenuItem Sprite3"> &nbsp; </div> <div id="div4" class="MenuItem Sprite4"> &nbsp; </div> <div id="div5" class="MenuItem Sprite5"> &nbsp; </div> <div id="div6" class="MenuItem Sprite6"> &nbsp; </div> My problem is listed as comment inside the code section. What will be the easiest way to achieve this? Thanks in advance

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  • git: remove 2nd commit

    - by cwolves
    I'm trying to remove the 2nd commit to a repo. At this point I could just blow away the .git dir and re-do it, but I'm curious how to do this... I've deleted commits before, but apparently never the 2nd one :) > git log commit c39019e4b08497406c53ceb532f99801793205ca Author: Me Date: Thu Mar 22 14:02:41 2012 -0700 Initializing registry directories commit 535dce28f1c68e8af9d22bc653aca426fb7825d8 Author: Me Date: Tue Jan 31 21:04:13 2012 -0800 First Commit > git rebase -i HEAD~2 fatal: Needed a single revision invalid upstream HEAD~2 > git rebase -i HEAD~1 at which point I get in my editor: pick c39019e Initializing registry directories # Rebase 535dce2..c39019e onto 535dce2 # # Commands: # p, pick = use commit # r, reword = use commit, but edit the commit message # e, edit = use commit, but stop for amending # s, squash = use commit, but meld into previous commit # f, fixup = like "squash", but discard this commit's log message # x, exec = run command (the rest of the line) using shell # # If you remove a line here THAT COMMIT WILL BE LOST. # However, if you remove everything, the rebase will be aborted. # Now my problem is that I can't just blow away this 2nd commit since "if you remove everything, the rebase will be aborted"

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  • Can't add/remove items from a collection while foreach is iterating over it

    - by flockofcode
    If I make my own implementation of IEnumerator interface, then I am able ( inside foreach statement )to add or remove items from a albumsList without generating an exception.But if foreach statement uses IEnumerator supplied by albumsList, then trying to add/delete ( inside the foreach )items from albumsList will result in exception: class Program { static void Main(string[] args) { string[] rockAlbums = { "rock", "roll", "rain dogs" }; ArrayList albumsList = new ArrayList(rockAlbums); AlbumsCollection ac = new AlbumsCollection(albumsList); foreach (string item in ac) { Console.WriteLine(item); albumsList.Remove(item); //works } foreach (string item in albumsList) { albumsList.Remove(item); //exception } } class MyEnumerator : IEnumerator { ArrayList table; int _current = -1; public Object Current { get { return table[_current]; } } public bool MoveNext() { if (_current + 1 < table.Count) { _current++; return true; } else return false; } public void Reset() { _current = -1; } public MyEnumerator(ArrayList albums) { this.table = albums; } } class AlbumsCollection : IEnumerable { public ArrayList albums; public IEnumerator GetEnumerator() { return new MyEnumerator(this.albums); } public AlbumsCollection(ArrayList albums) { this.albums = albums; } } } a) I assume code that throws exception ( when using IEnumerator implementation A supplied by albumsList ) is located inside A? b) If I want to be able to add/remove items from a collection ( while foreach is iterating over it), will I always need to provide my own implementation of IEnumerator interface, or can albumsList be set to allow adding/removing items? thank you

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  • how can i safely remove an external hard drive?

    - by Edmond Condillac
    Two of the three icons of the drive's partitions show on the desktop. One has disappeared and the contents are not accessible. Right clicking on the desktop icon of the partition gives the option to eject. Then the error message shows that the drive is busy and cannot be shut down. The drive is continually pinning. Kindly advise if possible how to safely remove the drive. Can the lost icon of the third drive and the datd contained in it be found, please? Kind regards

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  • How do I safely use a virus infected USB drive in Ubuntu?

    - by suhridk
    I have an USB drive which I know is virus infected (an anti-virus on my friend's machine detected it). Unfortunately neither of us know the virus name and I don't want to take the risk of plugging it to my Windows box again. Of course, in all probability the virus affects only Windows. (But I'm not sure) I want to know if I can safely plug the USB into my Ubuntu Lucid laptop and copy the stuff I need from the drive. If there are some precautions I need to follow what would they be?

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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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