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I want to know how can we mount an file as read-only in Linux CentOS 7 Server through Golang. I have tried syscall but that doesn't work, syscall mounts the file but as read-write i have tried to give ro argument in the data but still it's mounting as read-write. Here is my go code:

I am trying to get a volume mounted as a non-root user in one of my containers. I'm trying an approach from this SO post using an initContainer to set the correct user, but when I try to start the configuration I get an "unbound immediate PersistentVolumneClaims" error. I suspect it's because the volume is mounted in both my initContainer and container, but I'm not sure why that would be the issue: I can see the initContainer taking the claim, but I would have thought when it exited that it would release it, letting the normal container take the claim. Any ideas or alternatives to getting the directory mounted as a non-root user? I did try using securityContext/fsGroup, but that seemed to have no effect. The /var/rdf4j directory below is the one that is being mounted as root.

Configuration:

I'm planning to move away from Docker to Podman. I use docker-compose a lot so am planning to switch to podman-compose as well.

However I'm stuck at the simplest of podman examples, I can't seem to mount a volume onto my container? Obviously I'm doing something wrong however I cant figure out what it is.

My source file definitely exists on my (hardware) host (so not the podman machine). but I keep getting the error 'no such file or directory'.

Funny thing is if I manually create the same file locally on the podman machine (podman machine ssh --> touch /tmp/test.txt) it works perfectly fine.

Question is;

• should I (manually?) mount all my local files onto the Fedora VM (podman machine) so that in turn this Fedora mount can be used in my actual container? and if so, how do I do this?
• The podman run cmd below should work and there is something else I'm doing wrong?

I would like to use syscalls to get the id of the current user. I tried it like this:

What is the fundamental difference between tarring a folder using tar on Unix and tarfile in Python that results in a different file size?

In the example below, there is an 8.2 MB difference. I'm currently using a Mac. The folder in this example contains a bunch of random text files for testing purposes.

tar -cvf archive_unix.tar files/

python -m tarfile -c archive_pycli.tar files/ # using Python 3.9.6

I have 4 files all in the same directory: main.rakumod, infix_ops.rakumod, prefix_ops.rakumod and script.raku:

• main module has a class definition (class A)
• *_ops modules have some operator routine definitions to write, e.g., $a1 + $a2 in an overloaded way.
• script.raku tries to instantaniate A object(s) and use those user-defined operators.

Why 3 files not 1? Since class definition might be long and separating overloaded operator definitions in files seemed like a good idea for writing tidier code (easier to manage).

e.g.,

I recently updated from Debian 10 (Buster) to 11 (Bullseye) and since then my Jenkins setup inside Docker is not working anymore, as Jenkins tries to find out if it is running in a docker container by checking /proc/self/cgroup.

Normally /proc/self/cgroup inside a docker container would look something like this:

I just updated Android Studio to its latest version 4.2.1 and the emulator stopped working. Every time I try to launch a new virtual device it crashes and AVD Manager shows me this error:

"The emulator process for AVD Pixel_C_API_30 was killed"

Here is what I have tried so far:

1. Cold boot restart.

2. Deleted and recreated the virtual device inside AVD manager.

3. Removed and re-installed the emulator SDK package (version 30.7.4)

4. Quit and restarted Android Studio as well as the emulator.

5. Created a new virtual device from scratch.

6. Tried several different virtual devices.

All of the above gives me the same exact result: the emulator crashes and AVD manager shows me the error above.

And here is the error I get from MacOS (just the an excerpt of it):

I'm trying to have two different objects that refer to each other and also use type checking on the attributes. When I do this I get Circular module loading detected trying to precompile. Googling gets me https://docs.raku.org/language/faq#Can_I_have_circular_dependencies_between_modules? which states:

Note that Raku has no “1 file = 1 class” limitation, and circular dependencies within a single compilation unit (e.g., file) are possible through stubbing. Therefore another possible solution is to move classes into the same compilation unit.

I'd rather not put both classes into the same unit if I can avoid it. I'm not sure how to accomplish this with stubbing since there is no example. The following is a small example of what I'm trying to do: