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  • What to learn to make a photo gallery site like this? [closed]

    - by Steven Chen
    I started a Wordpress site for my blog but now I want to start another domain for sharing my photos. I used to use Flickr but it requires you to sign up for Flickr Pro if you want to upload over a certain amount of photos. Since I don't want to pay for that, I'm looking to create a photo gallery site like this: http://10mmgalore.com/ or http://www.shuttermaki.com/ But how do you go about with that? Would I be able to install Wordpress and find a theme like that? And/Or are there any Wordpress plugins that I can install to make it like look like that? Or do I need different tools and platforms asides from Wordpress? So can someone list the features, tools and information that I need to make a photo gallery site? The main functions that I want for my site is to have a picture in the middle and when the user clicks on the photo, it goes to the next photo; or there are left and right arrows that users can click to the next photo. I just want to create an album website for my 365 days project (a photo a day). It doesn't have to be as fancy as the sites mentioned above. Thank you!

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  • PL/SQL to delete invalid data from token Strings

    - by Jie Chen
    Previous article describes how to delete the duplicated values from token string in bulk mode. This one extends it and shows the way to delete invalid data. Scenario Support we have page_two and manufacturers tables in database and the table DDL is: SQL> desc page_two; Name NULL? TYPE ----------------------------------------- -------- ------------------------ MULTILIST04 VARCHAR2(765) SQL> SQL> desc manufacturers; Name NULL? TYPE ----------------------------------------- -------- ------ ID NOT NULL NUMBER NAME VARCHAR In table page_two, column multilist04 stores a token string splitted with common. Each token represent a valid ID in manufacturers table. My expectation is to delete invalid token strings from page_two.multilist04, which have no mapping id in manufacturers.id. For example in below SQL result: ,6295728,33,6295729,6295730,6295731,22, , value 33 and 22 are invalid data because there is no ID equals to 33 or 22 in manufacturers table. So I need to delete 33 and 22. SQL> col rowid format a20; SQL> col multilist04 format a50; SQL> select rowid, multilist04 from page_two; ROWID MULTILIST04 -------------------- -------------------------------------------------- AAB+UrADfAAAAhUAAI ,6295728,6295729,6295730,6295731, AAB+UrADfAAAAhUAAJ ,1111,6295728,6295729,6295730,6295731, AAB+UrADfAAAAhUAAK ,6295728,111,6295729,6295730,6295731, AAB+UrADfAAAAhUAAL ,6295728,6295729,6295730,6295731,22, AAB+UrADfAAAAhUAAM ,6295728,33,6295729,6295730,6295731,22, SQL> select id, encode_name from manufacturers where id in (1111,11,22,33); No rows selected SQL> Solution As there is no existing SPLIT function or related in PL/SQL, I should program it by myself. I code Split intermediate function which is used to get the token value between current splitter and next splitter. Next program is main entry point, it get each column value from page_two.multilist04, process each row based on cursor. When it get each multilist04 value, it uses above Split function to get each token string stored to singValue variant, then check if it exists in manufacturers.id. If not found, set fixFlag to 1, pending to be deleted.

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  • Use unnamed object to invoke method or not?

    - by Chen OT
    If I have a class with only only public method. When I use this class, is it good to use unnamed object to invoke its method? normal: TaxFileParser tax_parser(tax_file_name); auto content = tax_parser.get_content(); or unnamed object version: auto content = TaxFileParser(tax_file_name).get_content(); Because I've told that we should avoid temporary as possible. If tax_parser object is used only once, can I call it a temporary and try to eliminate it? Any suggestion will be helpful.

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  • Extract all related class type aliasing and enum into one file or not

    - by Chen OT
    I have many models in my project, and some other classes just need the class declaration and pointer type aliasing. It does not need to know the class definition, so I don't want to include the model header file. I extract all the model's declaration into one file to let every classes reference one file. model_forward.h class Cat; typedef std::shared_ptr<Cat> CatPointerType; typedef std::shared_ptr<const Cat> CatConstPointerType; class Dog; typedef std::shared_ptr<Dog> DogPointerType; typedef std::shared_ptr<const Dog> DogConstPointerType; class Fish; typedef std::shared_ptr<Fish> FishPointerType; typedef std::shared_ptr<const Fish> FishConstPointerType; enum CatType{RED_CAT, YELLOW_CAT, GREEN_CAT, PURPLE_CAT} enum DogType{HATE_CAT_DOG, HUSKY, GOLDEN_RETRIEVER} enum FishType{SHARK, OCTOPUS, SALMON} Is it acceptable practice? Should I make every unit, which needs a class declaration, depends on one file? Does it cause high coupling? Or I should put these pointer type aliasing and enum definition inside the class back? cat.h class Cat { typedef std::shared_ptr<Cat> PointerType; typedef std::shared_ptr<const Cat> ConstPointerType; enum Type{RED_CAT, YELLOW_CAT, GREEN_CAT, PURPLE_CAT} ... }; dog.h class Dog { typedef std::shared_ptr<Dog> PointerType; typedef std::shared_ptr<const Dog> ConstPointerType; enum Type{HATE_CAT_DOG, HUSKY, GOLDEN_RETRIEVER} ... } fish.h class Fish { ... }; Any suggestion will be helpful.

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  • Unittest test case only touches the file name

    - by Chen OT
    I was told that unittest is fast and the tests which touches DB, across network, and touches FileSystem are not unittest. In one of my testcases, its input are the file names (amount about 300~400) under a specific folder. Although these input are part of file system, the execution time of this test is very fast. Should I moved this test, which is fast but touches file system, to higher level test?

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  • Is the test, which touches the filenames under directory, a kind of unittest? [on hold]

    - by Chen OT
    I was told that unittest is fast and the tests which touches DB, across network, and touches FileSystem are not unittest. In one of my testcases, its input are the file names (amount about 300~400) under a specific folder. Although these input are part of file system, the execution time of this test is very fast. Should I moved this test, which is fast but touches file system, to higher level test?

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  • ???? ????? ????? ?????? ????? 10.2.0.4

    - by gadi.chen
    Normal 0 false false false EN-US X-NONE HE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";} DBA's ?????? ?????? ???? ??? ????? ??? ?????? ???? ????? ????? ??? ?????. ??? ????? ???? ????? ???? ??????? 30-Apr-2011  ???? ???? ?????? ????? ???? ??????? 10.2.0.4. ?????? ????? EBS ?? ????? ????? ????? ????? ??? ??? ???? ????? ?????? extended support, ???? ???? 11.5.10.2 ??? ???? ? 01-Dec-2011 . ) ????? ?????? ????  Minimum Baseline For Extended Support ????? ?????: 883202.1) ???? ????? ????? ?????? ?????? ?? ????? ????? ????? ????????? ???? ?? :   # ATG.RUP6 # Forms6i Patchset 19 # JRE 1.6.0_03       ???? ???? ?????? EBS ?? ????? ?????? ?????? ????? ???? ?????? ?? ,?? ??? ????? ?? ???? ??????.   ????? ???? 10.2.0.4 ?? ???? ?patches ????? ????  30-Apr-2011 . ???? ????  patches ????? ?? ????? ????? 10.2.0.5   .   ???? ????? EBS ????? 3 ?????? ?????? ?? ???: 1.      ????? ????? 11.2.0.2 - ??? ???? ????? ??????? ?????? ??? EBS ??????? 11i   ? R12 2.      ????? ????? 11.1.0.7 -  ??? ???? ????? ?????? ????? ????? 11.1 ??? ?????. 3.      ?????/????? patch 10.2.0.5 -   ???? ????? ?????? ????? ?????? ????? 10gR2 . v\:* {behavior:url(#default#VML);} o\:* {behavior:url(#default#VML);} w\:* {behavior:url(#default#VML);} .shape {behavior:url(#default#VML);} Normal 0 false false false false EN-US X-NONE HE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman","serif";}   ?????? ??????? ???? ??????:     http://blogs.oracle.com/stevenChan/2011/01/ecs_10gr2_10204.html On Database Patching and Support: A Primer for E-Business Suite Users Oracle Database 10.2 End of Premier Support -- Frequently Asked Questions (Note 1130327.1)        

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  • Winnipeg Code Camp&ndash;Session Announcement

    - by D'Arcy Lussier
    I’ve been updating the Winnipeg Code Camp website over the last few weeks with sessions and speakers as we’ve added them, and I’m happy to announce the full set of sessions!* We have a very interesting mix this year with new speakers and varied technologies! Remember this is a *FREE* event, so head over to our website to find out how to register for what will be a fantastic code camp! *OK, so we still have one session that needs to be have an official title, and one session that’s still TBA…but close enough. ;) What`s New in Entity Framework 4 Aaron Kowall Easy Automation Setup for Everyday Projects Amir Barylko Hackerspaces Everywhere! Winnipeg: Our Time is Now Andrew Orr C# Ninjitsu Chris Eargle Code like a Ninja:Enhance Your Productivity with VS.NET & JustCode Chris Eargle Scala Language Tour Craig Tataryn WP7 - Creating a Data Driven App D`Arcy Lussier TBA (WordPress Related) Dan Bernardic WP7 Development Foundation D'Arcy Lussier HTML5 for .NET Pros Dave Wesst Turbocharge Your Manual Testing Process with VS 2010 Dylan Smith Develop Visual Studio 2010 Extensions - Twitter Studio George Chen Functionality Driven Development with Asp .Net MVC George Chen & Sean Bennett Web Development for Mobile Devices Kelly Cassidy Intro to Nmap Security Scanner Mak Kolybabi My Personal Top 10 SQL Habits Good and Bad Mike Diehl Stupid Mistakes Made By Smart People Ron Bowes Intro to jQuery Stefan Penner Taking Your WP7 Application to the Next Level with Tombstoning Tyler Doerksen Coming Soon! Tyler Doerksen

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  • `# probe: true` in /etc/rc.d/init.d/* files on a RedHat system

    - by Chen Levy
    Some files (e.g. nfs, nfslock, bind) in my /etc/rc.d/init.d/ directory have in their comment header a line such as: # probe: true I found that those particular scripts has the probe verb i.e.: service nfs probe But this is due to the fact that the mentioned scripts has code that deals with the probe verb. I find no mention of the # probe: true notation in chkconfig man page, nor in any related man pages. Googleing for it also didn't help. Is there a real significance for that line, or is it pure documentation?

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  • Too much memory consumed during TFS automated build

    - by Bernard Chen
    We're running TFS 2010 Standard Edition, and we've set up an automated build to run whenever someone checks in code. We run through all of the automated tests (built with MSTest) as part of the build. We've configured the build to run the tests as a 64-bit process, but the QTAgent.exe that runs the tests grows in memory while the tests are running. It is currently reaching 8GB for the ~650 tests we have, and the process has slowed significantly when we went from 450 tests to 650 tests. When we run all of the tests in the local development environment, memory seems to be freed at least with each TestClass and never exceeds a certain level. The process of running all tests has not increased significantly in the local development environment. Is there a way to configure the build service to free up memory with each Test or each TestClass? With the way things are currently running, the build process gets very slow when we start to run out of memory on the machine. Edit: I found the MSTest invocation in the build log and ran it manually and saw the same behavior of runaway memory. I removed the /publish, /publishbuild, /teamproject, /platform, and /flavor parameters from the invocation of MSTest, in case the test runner was holding onto results until the end, but the behavior didn't change. I ran the same command line on a dev box, separate from the build server, and the memory freed up frequently. It seems there must be something wrong/different about the build server that is causing it to behave different, but I'm stumped where to look. I've looked at qtagent.exe.config, mstest.exe.config, versions of both executables. What else might affect this?

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  • GNU screen, how to get current sessionname programmably

    - by Jimm Chen
    [ This can be considered step 2 of my previous question Is it possible to change GNU screen session name after created? ] Actually, I'd like to write a script that can display current screen session name and change current session name. For example: sren armcross It will change the session name to armcross (ARM gcc cross compiler) and output something like: screen session name changed from '25278.pts-15.linux-ic37' to 'armcross' So, the key question now is how to get current session name. Not only for display the old session name, but according to Is it possible to change GNU screen session name after created? , I have to know it(pass to -d -r) before I can change it to something else. Can we use $STY for current session name? No. $STY will not change after you have changed the session name to a user-defined one. However, for command screen -d -r <oldsessname> -X sessionname armcross should be the user-defined name(if ever defined) instead of $STY, otherwise, screen spouts error "No screen session found." Maybe, there is a verbose way, use screen -list to list all sessions(user-defined name listed), then, match the pid part from $STY against those listed sessions and we will find current session's user-defined name. It should not be so verbose for such a straightforward question. Don't you think so? The -d -D and -r -R options seems to expose too much implementation detail to screen's user. It seems, to rename a session, you have to detach it, then do the rename, then reattach it. Right? My env: opensuse 11.3, GNU screen 4.00.03 (FAU) 23-Oct-06 Thank you.

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  • Limit vsftp upload to a given set of file-names

    - by Chen Levy
    I need to configure an anonymous ftp with upload. Given this requirement I try to lock this server down to the bear minimum. One of the restrictions I wish to impose is to enable the upload of only a given set of file-names. I tried to disallow write permission to the upload folder, and put in it some empty files with write permission: /var/ftp/ [root.root] [drwxr-xr-x] |-- upload/ [root.root] [drwxr-xr-x] | |-- upfile1 [ftp.ftp] [--w-------] | `-- upfile2 [ftp.ftp] [--w-------] `-- download/ [root.root] [drwxr-xr-x] `-- ... But this approach didn't work because when I tried to upload upfile1, it tried to delete and create a new file in its' place, and there is no permissions for that. Is there a way to make this work, or perhaps use a different approach like abusing the deny_file option?

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  • Any command line tool checking windows domain password?

    - by Chen Jun
    Does Windows provide a command line utility that lets me check a domain user's password? It is sufficient that the utility returns success(0) if I provide a matching domain user name and password. Alternatively, is there a simple VB/JS script that can do this? I'm the Intranet admin of my company and have the default password set for corporate staff, so I'd like to quickly scan which users have not changed their default password. Better yet, are there any books or websites which cover such topics so that I can get more information?

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  • Detach current session and attach to another session, done with one script, can I?

    - by Jimm Chen
    After reading the vague official doc of GNU screen( http://www.gnu.org/software/screen/manual/screen.html ) and asking quite some questions at this site. I still cannot figure out how to accomplish such a task with a shell script. This task costs some words to describe. Assume I'm using PuTTY to telnet into my Linux server. ?STEP 1? Launch 2 telnet connections . From putty window 1 (PTWIN1),telnet into Linux Bash shell, execute screen -RR to launch a screen session, and get session name 21385.pts-4.linux-ic37 . From putty window 2 (PTWIN2), do that same as in PTWIN1, but this time, I get session name 22041.pts-9.linux-ic37 . Now, we have two screen sessions running simultaneously. We can check this: $ screen -ls There are screens on: 22041.pts-9.linux-ic37 (Attached) 21385.pts-4.linux-ic37 (Attached) 2 Sockets in /var/run/uscreens/S-chj2. ?STEP 2? Assume that for some reason, PTWIN1's TCP connection is lost abnormally(but server doesn't know that), and an urgent work is pending on session 21385 and I want to quickly regain control of it. Fortunately, we know the 21385 session is still there, so, I want to have PTWIN2 attach to session 21385. Because I hate to remember the esoteric screen option all the time, so I decide to write a script called sttach. I hope that sttach 21385.pts-4.linux-ic37 can let me attach to session 21385(for PTWIN2). Now, let's say sttach works well and I take control of 21385 on PTWIN2. ?STEP 3? Some minutes later. I want to go back to work on session 22041. Here, please allow me to have PTWIN2 remain associated with session 21385. What I would like to do is to launch another putty window (PTWIN3), telnet into server, and execute sttach 22041.pts-9.linux-ic37 in hope that I can resume session 22041 on PTWIN3 . You can see the benefit of sttach: as long as I know the target session name, I can call it to have my PuTTY window switch to that session, regardless whether the target session is "(Attached)" or "(Detached)", and regardless whether the running context is inside a screen session or not. Now the question: How to write the (Bash) script sttach? I mean, run screen with appropriate options in sttach to accomplish the goal. Waiting for your kind answer. Thank you. My previous questions regarding GNU screen: GNU screen, how to get current sessionname programmatically Is it possible to change GNU screen session name after created? How do I know I'm running inside a linux "screen" or not? My env: openSUSE Linux 11.3, GNU screen 4.00.03 (FAU) 23-Oct-06

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  • Some Windows AD user property cannot be changed by AD user himself, what controls it?

    - by Jimm Chen
    I'm curious with a question I find. An Windows Active Directory user can change his own telephone number, street address etc, but can NOT change his own email-address registered on the AD. Using Python+pywin32 I can also verify this behavior. When trying to change own EmailAddress, I got error General access denied error . I'd like to know where in the AD this allow/deny behavior is defined. Thank you.

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  • ADExplorer, how to search with "distinguishedName contains" condition?

    - by Jimm Chen
    I'm using ADExplorer 1.42 from Microsoft. I'm not very versed at this program so please kindly help me out with a search-related problem. Right click on a node(e.g., CN=NlscanStaff) and select Search Container... , with default search attributes, I can see all objects inside NlscanStaff listed as result. Note that there is a CN=CHJTEST object listed. Now, my question is, how to search for CHJTEST specifically? I tried search condition: Attribute : distinguishedName Relation : contains Value : CN=CHJTEST Click Add , then Search . But no result. Can someone tell me what's going wrong? Thanks.

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  • Limit vsftpd upload to a given set of file-names

    - by Chen Levy
    I need to configure an anonymous ftp with upload. Given this requirement I try to lock this server down to the bear minimum. One of the restrictions I wish to impose is to enable the upload of only a given set of file-names. I tried to disallow write permission to the upload folder, and put in it some empty files with write permission: /var/ftp/ [root.root] [drwxr-xr-x] |-- upload/ [root.root] [drwxr-xr-x] | |-- upfile1 [ftp.ftp] [--w-------] | `-- upfile2 [ftp.ftp] [--w-------] `-- download/ [root.root] [drwxr-xr-x] `-- ... But this approach didn't work because when I tried to upload upfile1, it tried to delete and create a new file in its' place, and there is no permissions for that. Is there a way to make this work, or perhaps use a different approach like abusing the deny_file option?

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  • Recovering data from mangodb raw files

    - by Jin Chen
    we use mongodb for our database and set the replset(two servers), but we mistakenly deleted some raw files that under /path/to/dbdata on both servers, after we used tool to get back the deleted files(we ran the extundelete on both server and mix the result together), like database.1, database.2 etc. we could not start the mongod, it raised the following error when starting mongod or executing mongodump, here is the console output: root@mongod:/opt/mongodb# mongodump --repair --dbpath /opt/mongodb -d database_production Thu Aug 21 16:22:43.258 [tools] warning: repair is a work in progress Thu Aug 21 16:22:43.258 [tools] going to try and recover data from: database_production Thu Aug 21 16:22:43.262 [tools] Assertion failure isOk() src/mongo/db/pdfile.h 392 0xde1b01 0xda42fd 0x8ae325 0x8ac492 0x8bd8e0 0x8c1c51 0x80e345 0x80e607 0x80e6a4 0x6db92a 0x6dc1ff 0x6e0db9 0xd9e45e 0x6ccdc7 0x7f499d856ead 0x6ccc29 mongodump(_ZN5mongo15printStackTraceERSo+0x21) [0xde1b01] mongodump(_ZN5mongo12verifyFailedEPKcS1_j+0xfd) [0xda42fd] mongodump(_ZNK5mongo7Forward4nextERKNS_7DiskLocE+0x1a5) [0x8ae325] mongodump(_ZN5mongo11BasicCursor7advanceEv+0x82) [0x8ac492] mongodump(_ZN5mongo8Database19clearTmpCollectionsEv+0x160) [0x8bd8e0] mongodump(_ZN5mongo14DatabaseHolder11getOrCreateERKSsS2_Rb+0x7b1) [0x8c1c51] mongodump(_ZN5mongo6Client7Context11_finishInitEv+0x65) [0x80e345] mongodump(_ZN5mongo6Client7ContextC1ERKSsS3_b+0x87) [0x80e607] mongodump(ZN5mongo6Client12WriteContextC1ERKSsS3+0x54) [0x80e6a4] mongodump(_ZN4Dump7_repairESs+0x3a) [0x6db92a] mongodump(_ZN4Dump6repairEv+0x2df) [0x6dc1ff] mongodump(_ZN4Dump3runEv+0x1b9) [0x6e0db9] mongodump(_ZN5mongo4Tool4mainEiPPc+0x13de) [0xd9e45e] mongodump(main+0x37) [0x6ccdc7] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xfd) [0x7f499d856ead] mongodump(__gxx_personality_v0+0x471) [0x6ccc29] assertion: 0 assertion src/mongo/db/pdfile.h:392 Thu Aug 21 16:22:43.271 dbexit: Thu Aug 21 16:22:43.271 [tools] shutdown: going to close listening sockets... Thu Aug 21 16:22:43.271 [tools] shutdown: going to flush diaglog... Thu Aug 21 16:22:43.271 [tools] shutdown: going to close sockets... Thu Aug 21 16:22:43.272 [tools] shutdown: waiting for fs preallocator... Thu Aug 21 16:22:43.272 [tools] shutdown: closing all files... Thu Aug 21 16:22:43.273 [tools] closeAllFiles() finished Thu Aug 21 16:22:43.273 [tools] shutdown: removing fs lock... Thu Aug 21 16:22:43.273 dbexit: really exiting now my env: 1) Debian 3.2.35-2 x86_64(it's a XEN virtual machine) 2) mongodb 2.4.6 and we did not delete the .0 and .ns files we tried to create a new database with the same name and copy these db.ns and db.2, db.3 to the new db, we still met the same error. is there any way to check the valid of raw .ns and datafiles, and how to recover the database?

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  • How can user change the jre parameter values after the exe is generated in Launch4j?

    - by Wing C. Chen
    Is it possible to change the jre parameter values after the exe file is generated through Launch4j? The ideal scenario is like this: The default parameter values are applied when the program is started. However, when the user wants to change some jre parameter values, he goes to a .ini file, MyProgram.ini for example, changes the values there, and the new values will be applied next time the program is started. I think eclipse uses the same way for its memory and some other parameter settings.

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  • setting up rhel 5.x RPM build server for mortal users

    - by Chen Levy
    My task is to setup a RHEL 5.x build host, that can build RPMs for mortal users. On RHEL 6.x with rpm version 4.8, I have in /usr/lib/macros: # Path to top of build area. %_topdir %{getenv:HOME}/rpmbuild On RHEL 5.x with rpm version 4.4, the %{getevn:HOME} is not available. I know that I can use /home/someuser/.rpmmacros: %_topdir /home/someuser/rpmbuild and this will work for that user, however I don't want to do this for every user separately. Moreover, since .rpmmacro will not expand ${HOME} or ~ I suspect it is unsafe to use those. This in turn make /etc/skel unstable for this task (or so I suspect). So in short, my question is: How to setup RHEL 5.x host that allow all users to build RPM packages in their home directory?

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  • Can ZenOSS integrate Ganglia smoothly?

    - by chen
    I like Ganglia for its Gmetric function, and I like its multi-layer capability. But Ganglia does not have healthiness check, alerting and etc. for the server monitor functionality. So it would be great to bring this two species together. Sure, we can install Ganglia, and then install ZenOSS. But is there a plugin or something that can smoothly integrate them together? At least integration at the presentation level. Thanks

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  • Any program to help me check whether an ethernet channel can support full-length VLAN packet?

    - by Jimm Chen
    Sometimes, I have to face such a situation that I need to quickly and explicitly know whether a full length VLAN packet can traverse between two RJ45 ports. Yes, I mean 802.1Q ethernet frame with Etype=81 00 (diagram below). What I can do now is: Get two Windows PCs, for each PC, intall Intel Gigabit NIC and Intel specific driver to create a virtual NIC, with VLAN ID=3 assigned. Then connect the two PCs to each of the two RJ45 port. Finally execute ping to generate a full-length ethernet packet. ping -f -l 1472 <dest-IP> This way, I can be sure that the sent packet has the maximum "IP data payload" of 1500 bytes(8 bytes of ICMP header and 1472 bytes of ICMP data). If the ping gets reply, I know that the ethernet channel support full-length VLAN packet. From my experiment, some home switch or broad band routers(e.g. Linksys WRT54G) does not support full-length VLAN packet switching, so only ping -f -l 1468 succeeds. You see, I have to use an expensive Intel NIC to carry on that test, quite inconvenient. You know, for most laptop today, they do not equip an Intel NIC, and, even it is an Intel NIC, Intel VLAN driver, Intel has limitations on the models on which VLAN driver can be installed. So, my question is: Is there a small program that can let me send a full-length VLAN packet without installing a dedicated VLAN driver? Or better, the program has a stock feature that does the very job for my situation. Windows programs preferred, Linux solution welcome. Simpler the program, the better. Thank you.

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  • Is there any problem using the ftpd that comes with Kerberos on CentOS?

    - by Chen Levy
    Hello, I need to configure ftpd on a CentOS 5.3 host to allow anonymous ftp (upload and download) from a well defined directory. I wish the setup to be as simple as possible, and to introduce as little new dependencies as possible. Scanning the current server configuration, I found the ftpd server that comes as part of the Kerberos workstation: > rpm -ql krb5-workstation | grep ftpd$ /usr/kerberos/sbin/ftpd Is there any reason I could or should not use this ftp server?

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  • GNU screen, how to get current sessionname programmatically

    - by Jimm Chen
    [ This can be considered step 2 of my previous question Is it possible to change GNU screen session name after created? ] Actually, I'd like to write a script that can display current screen session name and change current session name. For example: sren armcross It will change the session name to armcross (ARM gcc cross compiler) and output something like: screen session name changed from '25278.pts-15.linux-ic37' to 'armcross' So, the key question now is how to get current session name. Not only for display the old session name, but according to Is it possible to change GNU screen session name after created? , I have to know it(pass to -d -r) before I can change it to something else. Can we use $STY for current session name? No. $STY will not change after you have changed the session name to a user-defined one. However, for command screen -d -r <oldsessname> -X sessionname armcross should be the user-defined name(if ever defined) instead of $STY, otherwise, screen spouts error "No screen session found." Maybe, there is a verbose way, use screen -list to list all sessions(user-defined name listed), then, match the pid part from $STY against those listed sessions and we will find current session's user-defined name. It should not be so verbose for such a straightforward question. Don't you think so? The -d -D and -r -R options seems to expose too much implementation detail to screen's user. It seems, to rename a session, you have to detach it, then do the rename, then reattach it. Right? My env: opensuse 11.3, GNU screen 4.00.03 (FAU) 23-Oct-06 Thank you.

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  • Possible to use DRBD on two ESXi virtualized servers?

    - by chen
    I have two servers (attached disks have been set up as hardware RAID1 for disk device level failure resilience). Here is the setup in my mind: 1) Install ESXi on each of the physical server, M1, M2; 2) Start one VM on each of the ESXi virtualized physical server V1, V2; 3) Install the DRDB drivers within V1 and V2. Essentially, this is a "virtualizing machine running DRBD in the VM's instead of bare metal hardware" idea. My question is whether the above setup can achieve the same "networked RAID1" goal that DRDB can achieve in the bare-metal physical machines (http://www.drbd.org/). Thanks. [EDIT] I found this (http://serverfault.com/questions/49305/drbd-experimentation-and-virtualization) is a similar question, but the answer does not seem to be firmative enough for me to follow.

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