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Exploring Docker container's file system
...container is in the data folder of docker, normally in /var/lib/docker. In order to start and inspect a running containers file system do the following:
hash=$(docker run busybox)
cd /var/lib/docker/aufs/mnt/$hash
And now the current working directory is the root of the container.
...
Checking if a SQL Server login already exists
...
In order to hande naming conflict between logins, roles, users etc. you should check the type column according to Microsoft sys.database_principals documentation
In order to handle special chacters in usernames etc, use N'<na...
CUDA incompatible with my gcc version
... to use the correct version of gcc without passing any compiler parameters by adding softlinks to the bin directory created with the nvcc install.
The default cuda binary directory (the installation default) is /usr/local/cuda/bin, adding a softlink to the correct version of gcc from this directory...
Java executors: how to be notified, without blocking, when a task completes?
...y to wait for several threads to complete execution before continuing.
In order to achieve the callback effect you're looking after, that does require a little additional extra work. Namely, handling this by yourself in a separate thread which uses the CountDownLatch and does wait on it, then goes ...
How can I recover a lost commit in Git?
...`
# is not pointing to the latest so you will need to checkout branch
# in order to be able to update the code.
git checkout <commit-id>
# Create a new branch forked to the given commit
git checkout -b <branch name>
git reflog
You can always use the reflog as well.
git reflog will d...
How to make node.js require absolute? (instead of relative)
...uch as require('xyz') from /beep/boop/foo.js, node searches these paths in order, stopping at the first match and raising an error if nothing is found:
/beep/boop/node_modules/xyz
/beep/node_modules/xyz
/node_modules/xyz
For each xyz directory that exists, node will first look for a xyz/package.j...
Creating a ZIP Archive in Memory Using System.IO.Compression
...her version of zipping without writing any file.
string fileName = "export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".xlsx";
byte[] fileBytes = here is your file in bytes
byte[] compressedBytes;
string fileNameZip = "Export_" + DateTime.Now.ToString("yyyyMMddhhmmss") + ".zip";
using (var outS...
Understanding the transclude option of directive definition?
...dd another use for transclusion, and that is that it changes the execution order of the compile and link functions of parent and child directives. This can be useful when you want to compile the child DOM before the parent DOM as the parent DOM perhaps depends on the child DOM. This article goes mor...
How to inject dependencies into a self-instantiated object in Spring?
...nner)
Gradle & Eclipse
Steps
I needed to follow the steps below in order to get it working
The @Configurable(preConstruction = true, autowire = Autowire.BY_TYPE, dependencyCheck = false) to be placed on top of your Bean that is to be manually instantiated. In my case the Bean that is to be...
Array versus linked-list
...t, i.e. that data structure that allows duplicate elements in an arbitrary order, that’s not suitable and you would have to go great lengths to make a data structure like LinkedList a concurrently updatable thing. If you only need a concurrent queue or deque, well yes, there are even existing exam...