227,866 questions
-1
votes
0
answers
15
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Multiple machines serving HTTP via one IP? [closed]
So I have one linux machine (machine one) with apache serving multiple domains (five+ virtuals.) One is getting particularly busy, and I want to move that one to a new "machine two" with ...
- 2,674
0
votes
0
answers
46
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Difference in pipeline output behavior of zsh vs bash [duplicate]
I am confused by a difference in the behavior of bash and zsh when running the same simple piped command in both of them.
When I run sleep 4 | wc < text.txt in bash, I get 0 0 0 as output instantly ...
- 138
2
votes
0
answers
71
views
Linux: Low-level management of virtual memory - collaboration between processes
If I were to mmap() a very large file (for read-only access) pages would be read-in, by the kernel, after a page fault indicates that the page is not already cached in RAM. Pages will remain cached ...
- 2,056
-3
votes
0
answers
30
views
Can not find systemd or openrc to use as a process supervisor for k3s [closed]
I'm trying to install K3s on my Macbook M4 to install a cluster on the server and configure it to communicate with kubernetes with this command:
sudo curl -sfL https://get.k3s.io | sh -
But I get ...
0
votes
0
answers
42
views
CMake in MacOS fails to compile a test program with both cc and clang
I have installed Clang++ and CMake on MacOS (via HomeBrew, all up to date) and I'm now trying to install some C++ image I/O libraries: CImg and bmpmini. In Linux the lines below clone and compile both ...
- 2,500
1
vote
1
answer
33
views
Failed to run netlink API in docker
Can anyone help me address the problem why Connection Refused happen when I run the program in docker container? If I set --net=host --privileged when running docker container, it works, otherwise ...
- 11
0
votes
0
answers
16
views
How to let pkgconfig find the cross compiling library?
I'm cross compiling my project from Debian x86_64 host to arm64, using the cross compilers and multiarch libraries installed from Debian's official repo. My project is built with CMake.
My problem is: ...
- 2,153
0
votes
0
answers
57
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C++ SFML window created from X11 handle says "not responding" despite running fine, and polling for events on Linux
so my problem is that when I create a X11 window and then create a SFML window from the X window handle, the os says the window is "not responding" even though I am polling for events and ...
0
votes
0
answers
42
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What is the best way to listen to battery events (charger plugged in, percentage change) in linux? [closed]
I want to blockingly listen to battery events. Why not poll the sysfs? Firstly, sysfs doesn't notify of any events; only some specific types of interfaces, if any at all, have the ability to be ...
- 59
1
vote
0
answers
61
views
JComboBox rendering larger than enclosing Frame on Linux/GTK
I encounter an issue with JComboBoxes on Linux (verified on Ubuntu with GTK LF but probably applies to other combos as well).
When I create a list of JComboBox components within a JInternalFrame the ...
- 298
-1
votes
1
answer
42
views
How do I clear the cache in Pentaho Data Integration? [closed]
How do you clear the cache for Pentaho in a Linux environment? Is there a particular file I need to delete somewhere?
3
votes
2
answers
91
views
Different results from iconv utility and iconv function in my application
I'm trying to write a C++ application that needs to output to the text terminal data comes from an LDAP database. The data in that database may contain accented characters, using UTF-8 chracter ...
- 986
0
votes
0
answers
30
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How can one use all 256 single character named registers in 'dc'? [closed]
So I'm reading the man page for desktop calculator (dc) https://linux.die.net/man/1/dc and I am confused about the register section
Registers
dc provides at least 256 memory registers, each named by a ...
- 1
0
votes
1
answer
62
views
How can I disable middle-click paste in a Java Swing application?
I am using the middle mouse button for an autoscroller in a Java Swing application. However, when I middle-click on a text component, on Linux it pastes the last selected text, which is unwanted. How ...
- 50.2k
0
votes
0
answers
131
views
Permission denied error even though programm should have access
I am writing a controller daemon in C++ for home automation which finally will run on an raspberry pi with Raspberry Pi OS. It is started with root permissions as after start it should read an SSL ...
- 31