I have the following problem: I am on Ubuntu 20.04 and I am trying to set up GNUstep which is required for certain source binaries I want to build (for the sake of completion, the program I want to build is called Advanced Rendering Toollḱit, information can be found here: https://cgg.mff.cuni.cz/ART/). When …
Debug address sanitizer double free
Trying to debug an asan (address sanitizer) double free memory issue. I got this stack: Might be some global object or something, cannot figure out a way under debugger to detect the instance. Setting a breakpoint on __asan::ReportGenericError does not help. Answer Looking in the stack it can be seen that the…
how to flip columns in reverse order using shell scripting/python
Dear experts i have a small problem where i just want to reverse the columns.For example i have a data sets arranged in 4 columns i need to put last column first, and so on reversely…how can this work be done…i hope some expert will definitely answer my questions.Thanks in put data example i need …
Bash script – Loop through directory with regex
I’m sure this must be possible, but I’m not sure how. What I’m trying to do is loop through a directory, looking for numeric directories within, and get their disk space. This is what I’ve come up with, but it’s not dealing with the regex. In case it’s not clear, I have a d…
Redirect parallel process bash script output to individual log file
I have a requirement, where i need to pass multiple arguments to the script to trigger parallel process for each argument. Now i need to capture each process output in the separate log file. Above piece of code can only give parallel processing for the input arguments. I tried with exec > >(tee “/…
Difference between two files containing file names
I have two files, audit.txt and server.txt, both contain filenames. I want to get only filenames that are present in audit.txt but not in server.txt ideally i would want the difference in a 3rd file missing.txt that will contain filename3 as per the example above. I have tried following but the missing.txt do…
Using git diff to replicate changes in another directory
I have multiple websites structured (simplified) as follows under a single GIT repository: I did some amendments in /site-1/index.js, /site-1/package.json and added a file /site-1/changes.md. The changes were done in 2 separate git commit in a feature branch called feature/carousel. I want to apply the same c…
Failed to open /dev/mem: Permission denied
Today, I tried to use this command on my raspberry Pi: But I got this error message : I’ve tried to place “sudo” before the command but I got the same error. How can I resolve this please ? (and sorry if I did a mistake, I started playing with my raspberry today and this is also my first que…
docker container can’t open symlinked file in volume mount during startup
I have a docker container which is launched with docker-compose.yml which contains There are symlinks in /tmp/mount/opt e.g. /tmp/mount/opt/my-app/test1.cfg which points to /host/path/test1.cfg When the container starts up, it fails with an error like: However if I docker exec -ti the_same_container bash and …
x86 NASM | Input in Loop working only the first and third time
I have a loop that runs succesfully 3 times, but the input I have in this loop works only the first time. I am new to assembly so pls have patience. Code: Output: Well, later I thought that the loop might not running a third time, so I changed the code a bit. New Code: New Output: Explaination: 0 is