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operating system - How can I check the bitness of my OS using Java? (J2SE, not os.arch)

I'm developing a software application that checks what kind of software you have installed, but in order to do so, I ... , etc...) that would be simply awesome. Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - What does fflush(stdin) do in C programing?

This question already has answers here: Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - What are the differences between virtual memory and physical memory?

I am often confused with the concept of virtualization in operating systems. Considering RAM as the physical memory, why ... is the size of the virtual memory? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - How do I check CPU and Memory Usage in Java?

I need to check CPU and memory usage for the server in java, anyone know how it could be done? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - Difference between binary semaphore and mutex

Is there any difference between a binary semaphore and mutex or are they essentially the same? Question&Answers:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - supportsave - Failed to initialize logging:-1

I'm trying to run supportsave to collect logs from a Brocade switch. Our SAN switch went down ... stackoverflow.com/questions/65838208/supportsave-failed-to-initialize-logging-1...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - Differences between Paging-based Virtual Memory and Base-Limit Registers

What are the advantages of a system that uses Paging-based Virtual Memory when compared to a system which ... -between-paging-based-virtual-memory-and-base-limit-registers...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - How does dirtybit maintained?

As far as I know the dirty bit is there to help determine if the page content is consistent with the ... :https://stackoverflow.com/questions/65872169/how-does-dirtybit-maintained...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - Making a 64 Bit Aware Bootloader

I have made a custom 64-bit kernel in C, and have a linker script to go with it, but I want to ... :https://stackoverflow.com/questions/65875753/making-a-64-bit-aware-bootloader...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - I denied myself access to explorer.exe... (Windows 10)

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. question from: ... 65877375/i-denied-myself-access-to-explorer-exe-windows-10...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - One package in my popOS machine is not upgrading and I cant seem to find which package it is

I tried everything described in this post. I did everything OP did and tried every answer, to no avail... Also, when I ... -machine-is-not-upgrading-and-i-cant-seem-to-find-which-p...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - Single instance of application

In general, what are the ways that we can make sure a single instance of application? This is not ... :https://stackoverflow.com/questions/65914077/single-instance-of-application...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - How to remove zombie process from my own C UNIX shell

I am writing my own UNIX-shell in C, If write & at the end of the command then the parent wont stop for ... /65918250/how-to-remove-zombie-process-from-my-own-c-unix-shell...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - How to determine drive in Windows using Python?

I have string named C:/, and I want to detect if this string is path of drive. Apparently, it seems ... .com/questions/65641091/how-to-determine-drive-in-windows-using-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

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operating system - Find and delete file in multiple folders getting an error

I am trying to write some code for finding and deleting hidden files in many folders. The file I want to ... /65649109/find-and-delete-file-in-multiple-folders-getting-an-error...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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912 views

1 answer

operating system - does close() imply flush() in Python?

In Python, and in general - does a close() operation on a file object imply a flush() operation? question ... //stackoverflow.com/questions/2447143/does-close-imply-flush-in-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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operating system - does close() imply flush() in Python?

In Python, and in general - does a close() operation on a file object imply a flush() operation? question ... //stackoverflow.com/questions/2447143/does-close-imply-flush-in-python...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

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operating system - What is kthreadd process and children and how it is different from init and children

I wanted to know what is kthread and why it does not take any memory and has no open files. I wrote some code ... -process-and-children-and-how-it-is-different-from-init-and-chil...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.2k views

1 answer

operating system - What is kthreadd process and children and how it is different from init and children

I wanted to know what is kthread and why it does not take any memory and has no open files. I wrote some code ... -process-and-children-and-how-it-is-different-from-init-and-chil...

asked Oct 7, 2021 in Technique[技术] by 深蓝 (71.8m points)

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971 views

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operating system - job, task and process, what's the difference

what is the difference between these concepts? question from:https://stackoverflow.com/questions/3073948/job-task-and-process-whats-the-difference...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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954 views

1 answer

operating system - Why does x86 paging have no concept of privilege rings?

Back in 1982, when Intel released the 80286, they added 4 privilege levels to the segmentation scheme (rings 0-3 ... 66053495/why-does-x86-paging-have-no-concept-of-privilege-rings...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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984 views

1 answer

operating system - Why does x86 paging have no concept of privilege rings?

Back in 1982, when Intel released the 80286, they added 4 privilege levels to the segmentation scheme (rings 0-3 ... 66053495/why-does-x86-paging-have-no-concept-of-privilege-rings...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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942 views

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operating system - Search for a filename in current directory and subdirectories Python

Apologies if this has been asked, but I couldn't find it anywhere. How can I search my current directory ... /search-for-a-filename-in-current-directory-and-subdirectories-python...

asked Oct 6, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.3k views

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operating system - How to import non-DMA memory with spdk?

I am working with ioat using SPDK but not familiar with SPDK. To be brief, I need to open a file on persistent ... help on this and I'll be really graduteful for your answers....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

operating system - How to fetch the path for the environment variable in Windows 10

I have set the path for one of the executable in Windows 10 and set the PATH variable to point to the executable. ... way to check how the PATH variable is resolving the location....

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.0k views

1 answer

operating system - how CPU get 4th byte out of 6 by using the paging concept?

solve the following scenario with the help of paging A process of size 6B stored in a main memory. CPU wants the 4th byte ... CPU get 4th byte out of 6 by using the paging concept?...

asked Feb 19, 2021 in Technique[技术] by 深蓝 (71.8m points)

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1.1k views

1 answer

operating system - How get vesa infos ? In c in low level

I search how can I get information in struct about vesa. I want to complete this struct, I prefer do it in c but I also ... EndIF: mov eax, di pop ebp Thank you for your help ;)...

asked Feb 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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2.5k views

1 answer

operating system - How can I solve 'UnicodeDecodeError' in Ubuntu?

I am trying to upgrade my 'Ubuntu 18.04.5 LTS' to 'Ubuntu 20.04 LTS'. I used the Ubuntu - 'Update manager' to get my ... )". Why this error occur ? How can I solve it ? Thank you....

asked Jan 27, 2021 in Technique[技术] by 深蓝 (71.8m points)

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