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Can't su to user jenkins after installing Jenkins
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as root, enter su - jenkins
Also, check in /etc/passwd that user jenkins is allowed to logon: there should be something like /bin/bash or /bin/sh, certainly not /bin/false at the end of the line.
Hint: You don't use su and sud...
Hibernate - A collection with cascade=”all-delete-orphan” was no longer referenced by the owning ent
...n you get the same error. This is because the owner of the children is the root Entity and not the component that is made null... A such, a component is never allowed to become null, but rather should result in a forward to a destroy() method in the child... At least, I don't know a better solution....
Making the Android emulator run faster
... Atom System Images" => SDK-Manager/Android 2.3.3
Go to the Android SDK root folder and navigate to extras\intel\Hardware_Accelerated_Execution_Manager. Execute file IntelHaxm.exe to install. (in Android Studio you can navigate to: Settings -> Android SDK -> SDK Tools -> Intel x86 Emulat...
java.lang.IllegalArgumentException: View not attached to window manager
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Instead of blindly catching all exceptions, this solution addresses the root of the problem: trying to dimiss a dialog when the activity used to initialize the dialog has already been finished. Working on my Nexus 4 running KitKat, but should work for all versions of Android.
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SQL JOIN and different types of JOINs
... film_actor fa
WHERE a.actor_id = fa.actor_id
)
Some folks (especially MySQL people) also write ANTI JOIN like this:
SELECT *
FROM actor a
LEFT JOIN film_actor fa
USING (actor_id)
WHERE film_id IS NULL
I think the historic reason is performance.
LATERAL JOIN
OMG, this one is too cool. I'm t...
Cassandra port usage - how are the ports used?
...emctl start opscenterd
systemctl start app-dse
create cqlshrc file.
vi /root/.cassandra/cqlshrc
[connection]
hostname = 198.168.1.100
port = 9035
Thanks,
Mahesh
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git add all except ignoring files in .gitignore file
... favorite text editor to open the file called .git/info/exclude within the root of your Git repository. Any rule you add here will not be checked in, and will only ignore files for your local repository.
In Terminal, navigate to the location of your Git repository
Using your favorite text editor, ...
Is there any reason for using WebGL instead of 2D Canvas for 2D games/apps?
...'t be possible with canvas, when it will run ok in webGL. Performance is a root feature.
Yet webGL is quite complicated to program : see if canvas is good enough for you or seek a library that will ease the pain...
Other drawback : it doesn't work on IE (but what does ?), and on some mobiles.
Se...
How do I add an existing Solution to GitHub from Visual Studio 2013
...e readme, you can recover by opening a git shell (bash or ps) and from the root directory type git remote rm origin. That will bring back the URL text box in VS2013 and allow you to re-add the remote server. There may be a way to do it in VS but I couldn't find it.
– bob
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IntelliJ IDEA: Running a shell script as a Run/Debug Configuration
...ileDir$ as the Working directory, which is a macro pointing to the project root directory. Other macros (e.g. for module specific directories) can be found under the Insert macro... button.
– Erik
Oct 7 '17 at 9:57
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