I’m trying to set the timeout for the blocking TCP socket on Linux using setsockopt with SO_SNDTIMEO and SO_RCVTIMEO. But for some reason I get a lock while waiting on recv call. Consider the minimal example. I’ve shortened it a bit for readability, the full code is available in this gist. I creat…
MySQLdb._exceptions.OperationalError: (1698, “Access denied for user ‘root’@’localhost'”)
When I ran a SQL python script it occurred these errors I looked in the mysql.user table and get the following: Answer I just had the same problem with MariaDB and found myself here expectating some answers, but no lucky. After some research I did an workaround, and judging by the similarities in both DB mana…
splitting the file based on repeatation
experts i have a file as below where first column is repeated 0.0,5.0,10.Now i want to split the third column at repeatation of the first column row and want to arrange the data side by side as below: so that my final file will be so that my final file will be Answer Using GNU awk: Process each line and
Linux is there a way to list a specified number of lines in a repository and sub repositories
I want to write a shell script which takes as input a valid path, and the script lists the first n (also a parameter) lines of all the files from the repository and sub repositories where the user who launched the script has read and write privileges. Is there a command that would allow me to do this? I belie…
Python creates Folder inside docker image but remove when processing completes
Python Program does create folder and put some files over there. But when i try to run the program inside docker via CMD It creates the folder and put files over there and upon completion, the folder somehow gets removed or doesnt show inside the docker image. I have tried the following things: Check Folder E…
How can I loop for end of month date between to dates in sh?
I want to loop and print end of month date between two dates. I have below code but it prints day on day. but I want these result for: 20210131 20210228 20210331 thanks in advance Answer Something like this or with -m flag
what’s the random byte mentioned in linux `shuf` –random-source?
I’m trying to prepare a few shuffled files with Linux shuf command, however, through shuf –help, it doesn’t provide any “seed” option. I wonder if there is any workaround? Thanks! Updates: thanks to the remind in the comments, I realize (1) shuf FILE produce different result each…
How does wglGetProcAddress/glXGetProcAddress communicate with a graphics driver?
When I build an OpenGL application on Windows 10 I have to link to opengl32.lib. I use GLEW for loading OpenGL functions. GLEW internally uses wglGetProcAddress(). opengl32.lib provides support only for OpenGL 1.1. How does opengl32.lib work when wglGetProcAddress() asks for some newer OpenGL functionality? D…
No path in “pkg-config proj –libs” – Known problem of “proj_api.h not found in standard or given locations”
No clue why this: pkg-config proj –libs gives: -lproj when it should be: -L/usr/lib/x86_64-linux-gnu -lproj because proj.pc is in /usr/lib/x86_64-linux-gnu/pkgconfig/ Now, is this problem related to proj_api.h not found in standard or given locations? My LMint 20.1 does not find that. I keep getting: Ev…
ASP.NET Docker UserSecrets location
I have created an ASP.NET application that connects to microsoft sql database and needs a password for that. When running the application under Windows it takes the password from secrets.json file located in C:Users<user>AppDataRoamingMicrosoftUserSecrets<UserSecretsId> When running under Docker I…