Category "linux"

Which all multicast groups are available under custom netlink protocol

I am trying to send a notification message from a kernel module to user space application using netlink sockets interface and custom netlink protocol. My unders

Install Python 3 on Centos 8 returns "Failed to synchronize cache for repo 'BaseOS'"

I am using CentOS 8. I'm trying to install Python 3. Command: sudo dnf install python3. Error: Failed to synchronize cache for repo 'BaseOS' How can I fix

failed to synchronize cache for repo AppStream

My centos machine has no connection to internet. I need to install make utility to compile some modules from source code. I am getting this error while i run yu

Unable to get output of a Python script with qprocess

I am trying to get the output of a Python script with qprocess but I can't seem to make it work. I think the issue is with the script since I can get the output

How to store line by line in a variable?

I want to search for hidden directories or files with "find" and store it in a variable. I tried like this and it works, but it is stored one after one in TEST.

Execute system command in x64 bit assembly?

I recently been trying to execute system commands using pure assembly. I managed to achieve it in a x32 bit binary as posted here: execute system command (bash)

How to get the actual download link embedded with any "Download" button

I have this code to download a big file in chunks: import requests from tqdm import tqdm def get_size(url): response = requests.head(url) size = int(r

RStudio hangs, won't start on Ubuntu 22.04LTS (R compiled from source)

Just another post about RStudio does not start. I'm using Ubuntu Linux 22.04LTS "jammy". Since the new R version (currently 4.2.0) wasn't available in the repos

NVM: Getting Permission denied with nvm install command

I recently fresh-installed Ubuntu 21.04 and wanted to install nvm: curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.38.0/install.sh | bash Then closed a

Old problem PHP still not resolved. PDO pgsql is slower than pg functions

i fight with same issue as described here: Slow connection PHP PDO Postgres but not MySQL here's the thing - PDO Postgresql connections seem to be really slow

grep positive/negative integer value only

I am looking to grep any positive/negative integers only and no decimals, or any other variation including a number. I have a testpart1.txt which has: This is a

How to get latest file from sftp server to local using mget in linux?

Hi I am following below logic to get the latest file from sftp server. But it is copying all the files. Please help what I need to correct in my logic? datadir=

Tkinter vs Linux (ubuntu/Mint) <KP_Enter> not enabled by default

On Windows the events of the 'Return' key by default are already linked to the <KP_Enter> key. For example selecting a combobox item, or closing a mesageb

user-data shell is not executed when an EC2 instance launched by ASG/Launch Configuration with custom AMI

I have a set of Auto scaling group and launch configuration to manage certain EC2 instances. After changing the AMI to a custom AMI, the user data script that I

Linux getenv() could not get $PS1 or $PS2

My home world is to write a shell. and I must use $PS2. but when I write a code like this: char *ENV_ps2; ENV_ps2 = getenv("PS2"); I just found ENV_ps2 was

BASH: Filter list of files by return value of another command

I have series of directories with (mostly) video files in them, say test1 1.mpg 2.avi 3.mpeg junk.sh test2 123.avi 432.avi 432.srt test3 asdf.m

How to delete or clear all the messages from the POSIX message queue in c?

I want to delete all the messages from the POSIX message queue. I searched on the internet but I didn't find any way to do it instead I found the way to delete

llvm/Support/TargetRegistry.h: No such file or directory

I have this error when I make project in WSL(Ubuntu 20.04). And I have installed LLVM and Clang.Hou should I do? Kconfig Makefile README.md build configs i

npm error installing truffle for ethereum development

When I try to install truffle using npm, the following output appears: npm WARN deprecated [email protected]: This package is broken and no longer maintained

How to undo extracted files by 7z

I was trying to install aws cli. I executed the following command curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip" It downloade