I’m understanding memory allocation in Linux and doing some changes in buddy allocator (__alloc_pages_nodemask) for my experiments. I create a new flag in struct page->flags (by adding a new flag in enum pageflags in page-flags.h. I set this bit permanently in __alloc_pages_nodemask (to not to be cleared once set and survive all further allocation and freeing. I modify PAGE_FLAGS_CHECK_AT_PREP to
To read desired values from file using linux system commands (grep,awk,sed) [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 1 year ago. Improve this question I have file test.txt contains some variables assigned to some value, i need to read all defined variables for example
sudo yum install is giving weird error on AWS Linux ec2 (SyntaxError: invalid syntax)
Machine details: Cloud: AWS OS: Linux ip-10-196-64-140.eu-west-1.compute.internal 4.14.209-160.335.amzn2.x86_64 #1 SMP Wed Dec 2 23:31:46 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux Error details: Answer I tried to reproduce the issue, and it fails when you run yum with python3 instead of python2: You should use python2, not python3 for yum: It seems that in your instance default python version was changed
grep to read exact data from text file
I have file test1.txt file, i am trying to read variable which is enclosed in double quotes and starting with hyphen for eg: “-color”. i trying to use this grep command cat test1.txt | grep getParm | sed ‘s/getParm(/ /;s/&/ /;s/,/ /;s/”/ /g’ | awk ‘{print $3}’ , where i am not able to read exact data for all variables
Linux bash script: How can I detect an error on a RESTORE DATABASE query on msssql-server?
Syncing a windows app with a linux website, I use a bash script which transfers each day a MS-SQL database from a Windows machine to a Linux installation, and uploads it to the mssql-server with the code below: Most of the times this line works perfectly. But there are instances in which restoration fails with an error like the following:
LightDM Webkit2 images issue
I am working on my hobby project for creating a theme for lightdm webkit2. I have choosen react framework since I am very comfortable with it. Here is the repo link https://github.com/gitneeraj/reactive/tree/feature/dist (checkout branch feature/dist). With some adjustments(mentioned below), I can get to see the HTML loaded fine as greeter on Display Manager. My problem is when I got a
How to switch from docker.io to quay.io?
I need help how to switch from image registry server from docker.io to quay.io. My cases is I pull centos image from hub.docker.com and I want to push it to quay.io. I have login to my quay.io but when I try to push to quay like this shell that was not working. Here are my step to switch to quay.io:
How to show gcc compiler warnings in VSCode terminal of a .c file
I have the C/C++ ms-vscode.cpptools extension installed (and the Code Runner). This is my task.json Note the -Wall option in the args part. When I compile and run the code the warnings don’t show up in my terminal, the errors only. Am I missing something? Answer Solved it was the configuration of code runner to be edited as well. Now
why module_param_hw( ) macro is more secure than module_param( )?
I’m starting to learn kernel modules programming. To pass any parameter to the kernel module you use module_param( ) macro which i guess work something like dynamic linking method in user space (deffer symbols relocation to run time by kernel modules loader) you can correct me if I’m wrong. Anyways, module_param() takes a permission parameter to specify the read write
Ubuntu error — cannot import name ‘gcd’ from ‘fractions’
I’m using Ubuntu to learn basic bioinformatics. I just downloaded multiqc using conda, but when I want to run multiqc, it returns: enter image description here I am very naive and don’t know how to solve this problem. ANY help would be highly appreciated. Thanks Answer I think gcd was moved to the math pack in 3.9. See https://docs.python.org/3/library/fractions.html Changed