I have this very reduced example of a bash command, where I want the $ sign escaped. So the command : should print out: a simple $test does not work unfortunately. I tried lots of other stuff but still couldn’t find a solution. Any suggestions ? Answer Put it in single quotes rather than double quotes. …
How to keep my web app running after exiting from EC2 CLI
I have tried tmux to keep my Streamlit app running on my AWS EC2 instance but it is not working, I am new to AWS and Linux, anybody ?? Answer I suggest you use screen Utility. Start new Screen You can start a new screen by the following command Then Press Enter to Start using Screen. Detach Screen Press Ctrl+…
Organize multitrheading datalogging [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question I’m working on a C project for an embedded target running a Linux distribution (build …
Measuring Elapsed Time Using clock_gettime(CLOCK_MONOTONIC)
I have to elapse the measuring time during multiple threads. I must get an output like this: Firstly, I used gettimeofday but I saw that there are some negative numbers then I made little research and learn that gettimeofday is not reliable to measure elapsed time. Then I decide to use clock_gettime(CLOCK_MON…
C: getopt_long() always returns invalid option
I’m trying to add a new option to an already working C program using getopt_long. The option I want to add is -S but every time I try to run the code I get: I simply add a new element to long_options vector concerning the option I want to add in this way: Below there is my code: I tried
My file doesn’t return the magic file message
I have to create a magic file that can detect a result of 42 on the 42nd byte. I’ve created the following line to then compile but when I run file -m <file_name> with this content I get the message Answer Your magic should be like this: Here’s my test:
Is there a linux equivalent of _aligned_realloc
Is there a linux equivalent of _aligned_realloc? I want to use realloc so I don’t have to memcpy the data every time I resize it. Am I stuck with mmap? I only used mmap once is there a recommended way of implementing memory that will be resized a few times? I’m assuming I can’t mix mmap with…
Adding dependencies to default Github Actions script
I have a Python web app on Azure that gets deployed via Github actions. I use the default deployment script that is created by the Azure deployment center (full script shown below). In order for my application to work, I must SSH into the deployment machine after each deployment and manually activate the virt…
Linux Socket timeout works on WSL, but not on Ubuntu
I try to run a TCP client without a server. The idea is simply to periodically try to connect. For this, the client tries to connect to port 1500 on localhost. Piece of code: I’ve set it up in Ubuntu 18.04 on WSL. There, the code waits on select for the defined timeout of 2 seconds and returns appropria…
Get Character String Written to Custom /dev/ file
I’m currently working with a custom device driver that I installed. I’m very new to this and having trouble understanding how to get the data that I write into it from the command line. For example, I write data to the file like so: And then I merely want to get the string here, so I can use the c…