Search Results

Search found 22007 results on 881 pages for 'variable reference'.

Page 281/881 | < Previous Page | 277 278 279 280 281 282 283 284 285 286 287 288  | Next Page >

  • Why lambdas seem broken in multithreaded environments (or how closures in C# works).

    Ive been playing around with some code for.NET 3.5 to enable us to split big operations into small parallel tasks. During this work I was reminded why Resharper has the Access to modified closure warning. This warning tells us about a inconsistency in handling the Immutable loop variable created in a foreach loop when lambdas [...]...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

    Read the article

  • What's wrong with this answer? [migrated]

    - by MikeLJ
    I wrote an answer to this question, but I can't post it even though it's not opinion based. which tile size to choice for 16-bits What's wrong with my answer? The Answer: I'll use these classic 16-bit consoles as reference: http://en.wikipedia.org/wiki/History_of_video_game_consoles_(fourth_generation) Super Nintendo: Max Resolution: 512x478 Sprites On Screen: 128 Max Sprite Size: 8×8. TurboGrafx-16: Max Resolution: 565x242 "Normal" resolution: 256×239 Sprites On Screen: 64 Max Sprite Sizes: 32×64 Neo Geo: Display resolution: 320×224 "Normal" Resolution: 304x224 Sprites on screen: 380 Max Sprite Size: 16x512

    Read the article

  • Mise à jour du cours vidéo Python pour débutants par Pythonnerie, trois nouvelles vidéos sur les bases de données

    voici un tutoriel, destiné à des débutants en informatique, utilise la vidéo pour aider à visualiser les concepts.Cours vidéo Python pour débutantsCe tutoriel est un travail en cours, qui sera (doucement) enrichi et complété au fil du temps. Bien entendu, il n'a aucune prétention à remplacer la documentation de référence, qu'il espère simplement rendre indirectement plus accessible. Mais son auteur espère avoir confirmé le goût de l'informatique chez ceux qui l'avaient déjà et montré aux autres que la programmation n'est pas forcément rébarbative ni mystérieuse....

    Read the article

  • What's the difference between these design pattern books? [on hold]

    - by BSara
    I'm currently looking for a good reference/guide for design patterns and in my search I've found the following three books highly recommended: Design Patterns: Elements of Reusable Object-Oriented Software Pattern Hatching: Design Patterns Applied Design Patterns Explained: A New Perspective on Object-Oriented Design I can't decide which book (if any) to purchase. So, my question is this: What are the fundamental differences between these books?

    Read the article

  • Cours vidéo Python pour débutants par Pythonnerie, mise à jour du cours et deux nouvelles vidéos sur les bases de données

    voici un tutoriel, destiné à des débutants en informatique, utilise la vidéo pour aider à visualiser les concepts.Cours vidéo Python pour débutantsCe tutoriel est un travail en cours, qui sera (doucement) enrichi et complété au fil du temps. Bien entendu, il n'a aucune prétention à remplacer la documentation de référence, qu'il espère simplement rendre indirectement plus accessible. Mais son auteur espère avoir confirmé le goût de l'informatique chez ceux qui l'avaient déjà et montré aux autres que la programmation n'est pas forcément rébarbative ni mystérieuse....

    Read the article

  • Row Count Plus Transformation

    As the name suggests we have taken the current Row Count Transform that is provided by Microsoft in the Integration Services toolbox and we have recreated the functionality and extended upon it. There are two things about the current version that we thought could do with cleaning up Lack of a custom UI You have to type the variable name yourself In the Row Count Plus Transformation we solve these issues for you.

    Read the article

  • When will Ubuntu migrate to GTK+ 3.0?

    - by Moma Antero
    Hello, I just got known that GTK+ 3.0.0 has been released. Will Ubuntu 10.10/11.04 come with runtime libraries for GTK+ 3.0? Are these installed by default? Will Ubuntu have development libraries and header files for compilation of GTK+ 3.0 programs? When will Ubuntu (as whole) move to GTK 3? I'm mostly concerned about moving audio-recorder app from GTK+ 2.x to 3.0. References: Migrating from GTK+ 2 to GTK+ 3 guide GTK+ 3 Reference Manual:

    Read the article

  • Nuget Commands

    - by kasi
    .Net Packages can be installed/uinstalled through the "Package Manager console" or through the VS 2010 option  "Tools" > "Library Package Manager" > "Add Library package reference" : CodePlex under getting started section http://nuget.codeplex.com/documentation?title=Package%20Manager%20Console%20Command%20Reference lists all the commands that are available for execution in package manager console.

    Read the article

  • an error in .profile ubuntu file prevents the system from booting?

    - by nafaa
    I tryied to set the JAVA_HOME environmet variable in the ~/.profile file and I made a mistake JAVA_HOME="/usr/lib/jvm/jdk1.6.0_37" PATH=$JAVA_HOME:PATH the error is in the PATH referencing. I put PATH rather than $PATH. this prevents me from login. I tried to edit the file using the recovery mode but it says that the file system is read only. so any suggestions how to deal with this issue. thanks

    Read the article

  • Getting Niche Specific Natural Back Links

    The only way your niche sites can become popular is by getting maximum natural back links. Search engines like it when your page is linked as a reference to some topic. These links have excellent anchor text in them. The websites which link back to your pages are also of the related category. This is an added bonus.

    Read the article

  • Microsoft dévoile « Bing for schools », une version sans publicité de son moteur de recherche, axée sur l'apprentissage pour les écoles

    Microsoft dévoile « Bing for Schools » une version sans publicité de son moteur de recherche, axée sur l'apprentissage pour les écolesMicrosoft veut faire du moteur de recherche Bing une plateforme de référence pour les écoliers.La firme a annoncé le lancement dans quelques mois du nouveau « Bing for Schools », une version axée vers l'éducation de son moteur de recherche, dépourvue de publicités et de contenus pour adultes.Cette nouvelle version sera disponible gratuitement pour les écoles qui pourront s'inscrire volontairement au programme. Aucun logiciel spécial ne sera requis et les redirections vers « Bing for schools » se feront automatiquement à partir de l'adresse Bing.com.L'enga...

    Read the article

  • How do I install and use the cli53 tools on Windows?

    - by pavlos
    I'm trying to find the simplest way to import a large number of BIND zone files in to Route 53. I've had a quick look at the AWS CLI and AWS Tools for Windows PowerShell but they don't seem to include a zone file import option like the AWS Route53 GUI does. The cli53 utility on the other hand does, but is written in Python and appears to have a series of pre-requisites to get going which I'm having troubles working out for Windows. I can find plenty of examples of setting it up under Linux but only one reference to a PowerShell example here, but it doesn't explain how to install cli53 in the first place. The other option I'm exploring is to use the BIND to Amazon Route 53 Conversion Tool perl script to first convert the zone files to the Route53 CreateHostedZoneRequest XML format and then use the AWS New-R53HostedZone PowerShell cmdlet to import the zones. After the zones have been imported I'll be looking at running a script to validate what has been created in Route53 matches with the existing nameserver prior to updating each domains nameserver records - I was planning on whipping something up using the new PS4.0 Resolve-DnsName cmdlet, but let me know if you have any better suggestions. Any assistance would be greatly appreciated - thanks. (By the way, I had more reference links in my post but ServerFault won't allow me to post more than 2 links being a new member; and for this same reason I also can't comment on Vasili's example in the other linked thread)

    Read the article

  • Problems setting NTP sever with w32tm for a DC that is a Hyper-V guest

    - by R.Tonheim
    Hello ! I have tried to sett my DC to get its time from several NTP severs. I follow this answer (http://serverfault.com/questions/24298/w32time-sync-problems-for-hyper-v-guests-w32time-event-ids-38-24-29-35/24299#24299) to do it. First I disable Time Synchronization in the Hyper-V Integration Services for each guest. Then restart the Windows Time serviceon the guest. I had before this used this command: w32tm /config /manualpeerlist:"ntp.uio.no;timekeeper. uio.no;nissen.uio.no;0.no.pool.ntp.org;1.no.pool.ntp.org;2.no.pool.ntp.org" /syn cfromflags:manual /reliable:yes /update And the cmd sad: The command completed successfully. But the time was still 10 min wrong... I run w32tm again after restarted the DC without it having any effect. The w32tm /query /status still say: "Source: Local CMOS Clock" FROM MY CMD: Microsoft Windows [Version 6.0.6002] Copyright (c) 2006 Microsoft Corporation. All rights reserved. C:\Users\Administrator.MHGw32tm /query /status Leap Indicator: 0(no warning) Stratum: 1 (primary reference - syncd by radio clock) Precision: -6 (15.625ms per tick) Root Delay: 0.0000000s Root Dispersion: 10.0000000s ReferenceId: 0x4C4F434C (source name: "LOCL") Last Successful Sync Time: 05.09.2009 20:06:21 Source: Local CMOS Clock Poll Interval: 6 (64s) C:\Users\Administrator.MHGw32tm /config /manualpeerlist:"ntp.uio.no;timekeeper. uio.no;nissen.uio.no;0.no.pool.ntp.org;1.no.pool.ntp.org;2.no.pool.ntp.org" /syn cfromflags:manual /reliable:yes /update The command completed successfully. C:\Users\Administrator.MHGw32tm /query /status Leap Indicator: 0(no warning) Stratum: 1 (primary reference - syncd by radio clock) Precision: -6 (15.625ms per tick) Root Delay: 0.0000000s Root Dispersion: 10.0000000s ReferenceId: 0x4C4F434C (source name: "LOCL") Last Successful Sync Time: 05.09.2009 20:06:21 Source: Local CMOS Clock Poll Interval: 6 (64s) C:\Users\Administrator.MHG

    Read the article

  • Mod Rewrite Help - Pseudo-Subdirectories

    - by Gimpyfuzznut
    I am dealing with a frustrating problem with Joomla that is going to require some url trickery. The idea is straight-forward but after reading a bunch of guides for mod-rewrite, I still can't seem to get it work. Let's say my site is www.mysite.com. Joomla is already performing some rewriting for SEF urls so I have links like www.mysite.com/home and www.mysite.com/news and so on. I want to be able to have (4) pseudo-subdirectories like www.mysite.com/mode1/ and www.mysite.com/mode2/ and so on. These subdirectories should work as if the subdirectory isn't there, ie both www.mysite.com/mode1/home and www.mysite.com/mode2/home should pull up the same www.mysite.com/home. It should point any www.mysite.com/mode1/anypagehere to www.mysite.com/anypagehere. The reason I am asking for this is because I will be reading the url for mode1, mode2, etc, to modify the template page. There will be a landing page that will direct people to /mode1/ and /mode2/ etc and the template will change based on that. Note, that I don't want to actually pass a parameter to the url accessible by a GET or whatever because Joomla removes it (perhaps because of my current mod_rewrite settings). I've pasted the current .htaccess file. RewriteBase /joomla ##########Rewrite rules to block out some common exploits RewriteCond %{QUERY_STRING} mosConfig_[a-zA-Z_]{1,21}(=|\%3D) [OR] # Block out any script trying to base64_encode crap to send via URL RewriteCond %{QUERY_STRING} base64_encode.*\(.*\) [OR] # Block out any script that includes a <script> tag in URL RewriteCond %{QUERY_STRING} (\<|%3C).*script.*(\>|%3E) [NC,OR] # Block out any script trying to set a PHP GLOBALS variable via URL RewriteCond %{QUERY_STRING} GLOBALS(=|\[|\%[0-9A-Z]{0,2}) [OR] # Block out any script trying to modify a _REQUEST variable via URL RewriteCond %{QUERY_STRING} _REQUEST(=|\[|\%[0-9A-Z]{0,2}) # Send all blocked request to homepage with 403 Forbidden error! RewriteRule ^(.*)$ index.php [F,L] ########## Begin - Joomla! core SEF Section RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{REQUEST_URI} !^/index.php RewriteCond %{REQUEST_URI} (/|\.php|\.html|\.htm|\.feed|\.pdf|\.raw|/[^.]*)$ [NC] RewriteRule (.*) index.php #RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization},L] ########## End - Joomla! core SEF Section

    Read the article

  • SQL Server 2008 Express + Reporting Services on Windows 7

    - by TimothyP
    I'm trying to install SQL Server Express 2008 and Reporting Services on a x64 Windows 7 Machine for development purposes. I've installed SQL Server 2008 Express with the Microsoft Web Platform Installer I had to manually enable the SQL Server Browser in the Sql Server Configuration Manager and tried to enable the SQL Server Agent but that simply doesn't work. Keeps throwing an RPC error: "The remote procedure call failed. [0x800706be]". The start mode is set to Disabled and I cannot change it. Even though I selected the SQL Server Express with advanced services in the web platform installer I could not find any reference to SQL Server Reporting Services so I used the SQL Server Installation Center x64 application to "upgrade" to SQL Server Express 2008 with advanced services... this installed many things but still I couldn't find any reference to SQL Server Reporting Services other than an application called: "Reporting Services Configuration Manager" This opens up a dialog called "Reporting Services Configuration Connection" which is asking for a server name (shows the name of my machine) and a Find button. When I click the find button I get: "Unable to connect to the Reporting Server WMI provider. Details: Invalid Namespace". I found some references on the web to solve this problem, but they refer to a directory: "%ProgamFiles%\Microsoft SQL Server\MSRS10.SQL2008\Reporting Services\" which does not exist anywhere on my system. (The directories for SQL Server are there, but there is no Reporting Services directory anywhere). What am I doing wrong here? Wasn't the web platform installer supposed to handle all this? Thnx for any advice. PS: Most google results refer to 2005 vs 2008 problems, but I never had 2005 installed on this system, it's a newly installed development machine.

    Read the article

  • Apache2 - mod_rewrite : RequestHeader and environment variables

    - by Guillaume
    I try to get the value of the request parameter "authorization" and to store it in the header "Authorization" of the request. The first rewrite rule works fine. In the second rewrite rule the value of $2 does not seem to be stored in the environement variable. As a consequence the request header "Authorization" is empty. Any idea ? Thanks. <VirtualHost *:8010> RewriteLog "/var/apache2/logs/rewrite.log" RewriteLogLevel 9 RewriteEngine On RewriteRule ^/(.*)&authorization=@(.*)@(.*) http://<ip>:<port>/$1&authorization=@$2@$3 [L,P] RewriteRule ^/(.*)&authorization=@(.*)@(.*) - [E=AUTHORIZATION:$2,NE] RequestHeader add "Authorization" "%{AUTHORIZATION}e" </VirtualHost> I need to handle several cases because sometimes parameters are in the path and sometines they are in the query. Depending on the user. This last case fails. The header value for AUTHORIZATION looks empty. # if the query string includes the authorization parameter RewriteCond %{QUERY_STRING} ^(.*)authorization=@(.*)@(.*)$ # keep the value of the parameter in the AUTHORIZATION variable and redirect RewriteRule ^/(.*) http://<ip>:<port>/ [E=AUTHORIZATION:%2,NE,L,P] # add the value of AUTHORIZATION in the header RequestHeader add "Authorization" "%{AUTHORIZATION}e"

    Read the article

  • need help with automating a CMD java tool whcih qurries alexa AWS using batch

    - by Eli.C
    Hi everyone, I need to get all available info on 600 URLs from "Alexa Web Information Service", I downloaded the java tool and I'm able to run a single query each time with a single switch/Response Group. I would like to ask how to write a batch file that would automate the process ? the java tool runs from the CMD with the following: C:java UrlInfo (key1) (key2) (URL) (Response Group) UrlInfo - constant key1 - constant key2 -constant URL - variable (I guess I need to use the "(" sign to read from a file) Response Group - variable - (14 total, and I need to run each Response Group on each of the URLs once ) the app returns data in clear text formatted as XML after each query, here is an example: C:java UrlInfo (key1) (key2) www.url.com Rank Response: (?xml version="1.0"?) (aws:UrlInfoResponse xmlns:aws="http://alexa.amazonaws.com/doc/2005-10-05/") (aws:Response xmlns:aws="http://awis.amazonaws.com/doc/2005-07-11") (aws:OperationRequest) (aws:RequestId)ec2b6-e8ae-b392(/aws:RequestId) (/aws:OperationRequest) (aws:UrlInfoResult) (aws:Alexa) (aws:TrafficData) (aws:DataUrl type="canonical")url.com/(/aws:DataUrl) (aws:Rank)472906(/aws:Rank) (/aws:TrafficData) (/aws:Alexa) (/aws:UrlInfoResult) (aws:ResponseStatus xmlns:aws="http://alexa.amazonaws.com/doc/2005-10-05/") (aws:StatusCode)Success(/aws:StatusCode) (/aws:ResponseStatus) (/aws:Response) (/aws:UrlInfoResponse) Any help would be really appreciated Thanks and regards Eli.C

    Read the article

  • How to remotely open gedit with SFTP URL in Gnome through SSH?

    - by Álvaro Justen
    My setup is weird and I can't change it now. I have two machines: local-machine: it's my desktop running Ubuntu with Gnome remote-machine: it's one virtual machine, also running Ubuntu but without X In both machines I have my private and public SSH keys. I need to run SSH from remote-machine to local-machine and run gedit (in local-machine, under the default $DISPLAY) but openning a file in remote-machine throught SFTP. Something like this: myuser@remote-machine:~$ ssh local-machine "DISPLAY=:0.0 gedit sftp://remote-machine/some/file" The command above doesn't work. gedit shows this message: Could not open the file sftp://remote-machine/some/file. gedit cannot handle sftp: locations. Note that: /some/file exists on remote-machine. I can SSH normally from remote-machine to local-machine using my SSH key without any problems! I can run the command DISPLAY=:0.0 gedit sftp://remote-machine/some/file in a terminal on local-machine and gedit opens the file on remote-machine without any problems - but the terminal in which I executed the command is running in DISPLAY :0 (really, it's gnome-terminal). I also tried -t option of SSH client (to force pseudo-tty allocation) but it didn't work. If I try to run DISPLAY=:0.0 gedit sftp://remote-machine/some/file in local-machine but under a tty (for example in tty1, by pressing <Ctrl>+<Alt>+<F1>) it doesn't not work - I get the same error when running from remote-machine. I found that if I pass the environment variable DBUS_SESSION_BUS_ADDRESS with a correct value, it works! So, if I do something like that: myuser@local-machine:~$ env | grep DBUS_SESSION_BUS_ADDRESS > env.txt myuser@local-machine:~$ scp env.txt remote-machine: and then: myuser@remote-machine:~$ ssh local-machine "DISPLAY=:0.0 $(cat env.txt) gedit sftp://remote-machine/some/file" it works! The problem is that I'm not on local-machine so I can't get the correct value for this env variable. Is there any other way to make this work?

    Read the article

  • need help with automating a CMD java tool which queries alexa AWS using batch

    - by Eli.C
    Hi everyone, I need to get all available info on 600 URLs from "Alexa Web Information Service", I downloaded the java tool and I'm able to run a single query each time with a single switch/Response Group. I would like to ask how to write a batch file that would automate the process? The java tool runs from the CMD with the following: C:\>java UrlInfo (key1) (key2) (URL) (Response Group) UrlInfo - constant key1 - constant key2 -constant URL - variable (I guess I need to use the "(" sign to read from a file) Response Group - variable - (14 total, and I need to run each Response Group on each of the URLs once ) the app returns data in clear text formatted as XML after each query, here is an example: C:\>java UrlInfo (key1) (key2) www.url.com Rank Response: (?xml version="1.0"?) (aws:UrlInfoResponse xmlns:aws="http://alexa.amazonaws.com/doc/2005-10-05/") (aws:Response xmlns:aws="http://awis.amazonaws.com/doc/2005-07-11") (aws:OperationRequest) (aws:RequestId)ec2b6-e8ae-b392(/aws:RequestId) (/aws:OperationRequest) (aws:UrlInfoResult) (aws:Alexa) (aws:TrafficData) (aws:DataUrl type="canonical")url.com/(/aws:DataUrl) (aws:Rank)**472906**(/aws:Rank) (/aws:TrafficData) (/aws:Alexa) (/aws:UrlInfoResult) (aws:ResponseStatus xmlns:aws="http://alexa.amazonaws.com/doc/2005-10-05/") (aws:StatusCode)Success(/aws:StatusCode) (/aws:ResponseStatus) (/aws:Response) (/aws:UrlInfoResponse) Any help would be really appreciated Thanks and regards Eli.C

    Read the article

  • Apache2 - mod_rewrite : RequestHeader and environment variables

    - by Guillaume
    I try to get the value of the request parameter "authorization" and to store it in the header "Authorization" of the request. The first rewrite rule works fine. In the second rewrite rule the value of $2 does not seem to be stored in the environement variable. As a consequence the request header "Authorization" is empty. Any idea ? Thanks. <VirtualHost *:8010> RewriteLog "/var/apache2/logs/rewrite.log" RewriteLogLevel 9 RewriteEngine On RewriteRule ^/(.*)&authorization=@(.*)@(.*) http://<ip>:<port>/$1&authorization=@$2@$3 [L,P] RewriteRule ^/(.*)&authorization=@(.*)@(.*) - [E=AUTHORIZATION:$2,NE] RequestHeader add "Authorization" "%{AUTHORIZATION}e" </VirtualHost> I need to handle several cases because sometimes parameters are in the path and sometines they are in the query. Depending on the user. This last case fails. The header value for AUTHORIZATION looks empty. # if the query string includes the authorization parameter RewriteCond %{QUERY_STRING} ^(.*)authorization=@(.*)@(.*)$ # keep the value of the parameter in the AUTHORIZATION variable and redirect RewriteRule ^/(.*) http://<ip>:<port>/ [E=AUTHORIZATION:%2,NE,L,P] # add the value of AUTHORIZATION in the header RequestHeader add "Authorization" "%{AUTHORIZATION}e"

    Read the article

  • Tomato OS: "memory exhausted" running vi .... how to solve?

    - by Sam Jones
    I have set up tomato (shibby) on an asus RT-N66U router. It works great. I loaded up a few pieces, like transmission and optware. I can run vi, but when I run vi it fails with a "memory exhausted" error, and the terminal session hangs. For reference: If I simply start "vi" it runs fine. But if I specify vi I get the memory exhausted error, even if the file I am opening is just a couple of hundred bytes in size (like fstab). I discovered that my swap partition was not properly set up, so I did that. The swapon command now indicates I really do have a swap: [root@MyRouter samba]$ swapon -s Filename Type Size Used Priority /dev/sda1 partition 32900860 0 1 How can I get vi to work? Thanks! System setup reference information: asus RT-N66U router 2TB usb hard drive partitions on hard drive: Disk /dev/sda: 2000.4 GB, 2000398839808 bytes 255 heads, 63 sectors/track, 30400 cylinders Units = cylinders of 16065 * 4096 = 65802240 bytes Disk identifier: 0xfacbc8ab Device Boot Start End Blocks Id System /dev/sda1 1 512 32900868 82 Linux swap / Solaris /dev/sda2 513 29000 1830638880 83 Linux running samba memory: $ cat /proc/meminfo MemTotal: 255840 kB MemFree: 210980 kB Buffers: 5264 kB Cached: 22768 kB SwapCached: 0 kB Active: 20272 kB Inactive: 11448 kB HighTotal: 131072 kB HighFree: 99868 kB LowTotal: 124768 kB LowFree: 111112 kB SwapTotal: 32900860 kB SwapFree: 32900860 kB Dirty: 0 kB Writeback: 0 kB TIA!

    Read the article

  • Change the default program for a filetype to something not in "Program Files" in Windows Vista

    - by Carson Myers
    I'm trying to make my python scripts run in python 2.6 by default when run from the command line. This is paired with adding certain scripts to the PATH variable and .py to PATHEXT for convenience. But I'll be damned if I can get the file type association to work. In the default programs dialog (found in control panel) I find .py, and click "Change Program." This gives me the same dialog as clicking "Open with..." on a file's context menu. I search for python. Tell it to use python, but it doesn't add it to the list of programs I am allowed to use. I tried making a shortcut to python in Program Files, but that won't work either. If I copy python into a folder in Program Files, then that works. But why can't I just point it at C:\python26\python.exe (which is in the PATH variable) in the first place? Is there a way around this, or do I have to just reinstall python into Program Files?

    Read the article

  • ssh X11 forwarding issue

    - by bbuser
    I have put ForwardX11 in my ~/.ssh/config and then I start a X11 application like this: ssh -f user@host 'someapp; sleep 1' This works fine. The application someapp has a button which opens a viewer application via a shell script viewer.sh. When I press the button the viewer comes up. This is all good and as expected, but if I do ssh -2 -f user@host 'someapp; sleep 1' there's trouble. someapp starts very well, but if I click the button the viewer doesn't show up. As the viewer is called via a shell script, I replaced the call with xclock and the situation was exactly the same - I think the viewer is not to blame. The situation is the same on Linux and AIX. The reason I need -2 is that I finally want to use connection multiplexing and this does only work with version 2. The reason for the sleep 1 is that it didn't work otherwise;-) To add more confusion, with ssh -2 -f user@host 'xterm &; app; sleep 1' the viewer works as long as the xterm is open. When I close xterm ssh -v outputs the following debug1: channel 1: FORCE input drain debug1: channel 0: free: client-session, nchannels 3 debug1: channel 1: free: x11, nchannels 2 and from that moment the viewer doesn't show when I press the button. I also replaced the viewer application with a script that writes the $DISPLAY variable to a file. The variable is always set correctly.

    Read the article

  • Postgresql base backup script

    - by Terry Lorber
    I'm using the following script to do a file-level backup of Postgresql. I sometimes see that the last part, to do cleanup after "pgs_backup_stop" is called, hangs while it waits for the last WAL to be created. The REF_FILE to search for is sometimes wrong. I'm also shipping these files to a different machine, every 5 minutes via rsync. What do other people do to safely remove old WAL files? #!/bin/bash PGDATA=/usr/local/pgsql/data WAL_ARCHIVE=/usr/local/pgsql/archives PGBACKUP=/usr/local/pgsqlbackup PSQL=/usr/local/pgsql/bin/psql today=`date +%Y%m%d-%H%M%S` label=base_backup_${today} echo "Executing pg_start_backup with label $label in server ... " CP=`$PSQL -q -Upostgres -d template1 -c "SELECT pg_start_backup('$label');" -P tuples_only -P format=unaligned` RVAL=$? echo "Begin CheckPoint is $CP" if [ ${RVAL} -ne 0 ] then echo "PSQL pg_start_backup failed" exit 1; fi echo "pg_start_backup executed successfully" echo "TAR begins ... " pushd $PGBACKUP tar -cjf pgdata-$today.tar.bz2 --exclude='pg_xlog' $PGDATA/* popd echo "TAR completed" echo "Executing pg_stop_backup in server ... " $PSQL -Upostgres template1 -c "SELECT pg_stop_backup();" if [ $? -ne 0 ] then echo "PSQL pg_stop_backup failed" exit 1; fi echo "pg_stop_backup done successfully" TO_SEARCH="*${CP:0:2}000000${CP:3:2}.00${CP:5}" echo "Check for ${WAL_ARCHIVE}/${TO_SEARCH}.backup" while [ ! -e ${WAL_ARCHIVE}/${TO_SEARCH}.backup ]; do echo "Waiting for ${WAL_ARCHIVE}/${TO_SEARCH}.backup" sleep 1 done REF_FILE="`echo ${WAL_ARCHIVE}/*${CP:0:2}000000${CP:3:2}`" echo "Reference file ${REF_FILE}" # "-not -newer" or "\! -newer" will also return REF_FILE # so you have to grep it out and use xargs; otherwise you # could also use the -delete action find ${WAL_ARCHIVE} -not -newer ${REF_FILE} -type f | grep -v "^${REF_FILE}$" | xargs rm -f REF_FILE="`echo ${PGBACKUP}/pgdata-$today.tar.bz2`" echo "Reference file ${REF_FILE}" find $PGBACKUP -not -newer ${REF_FILE} -type f -name pgdata* | grep -v "^${REF_FILE}$" | xargs rm -f

    Read the article

< Previous Page | 277 278 279 280 281 282 283 284 285 286 287 288  | Next Page >