I am currently trying to find if one of my Windows is underneath the Mouse cursor. This is not done in my process that creates the window, but in another process. What I am currently doing is finding the Window via the process PID (and I made sure _NET_WM_PID is set correctly by my program). This basically wo…
Tag: linux
How can i generate the response file for my binary installable?
I have the binary file to install a component when i am running using ./filename.bin it comes into console mode and asks for language selection and directory selection and all , i tried ./filename.bin -r path/response.properties, help me if anyone knows. Answer as you said that you have already tried using ./…
Segmentation fault caused by strb w1, [x22,x23] when x23 reaches a certain value
Encountered an interesting segmentation fault on strb w1, [x22,x23] instruction in ARMv8 Assembly code when x23 reaches a certain value (which is 635), when I’m not using bl write function. However, if I use bl instruction to call write function, the segmentation fault does not occur; but the program fi…
Color information disappears when writing a result of ‘grep –color=auto’ into a file
When I do as below with an aliased grep(grep –color=auto) it returns abcde (ab in red). but foo.txt has just abcde. I guess my terminal shows ab in red in the 1st case according to some tags by ‘grep’ but foo.txt does not contain them. Is it due to grep? Does grep judge what returning value …
EC2 User Access or File Access Problems?
I’ve been having some issues using an EC2 instance when I try and call CLI commands. I am using Laravel but I cant quite be sure if it is a Laravel issue or EC2. When I ssh into my EC2 instance, I run the following laravel command to migrate my database: php artisan migrate And I get the following error…
How does the memory behind statically allocated huge pages get distributed across NUMA nodes?
In my /etc/default/grub file I have explicitly set aside N huge pages with “hugepages=N”. If I’m running on a box with 2 NUMA nodes, does N/2 huge pages get set aside for each node, or do they all go to node 0, or ….? Also is there a way on the command line to query how they’re s…
find command not printing files with .wav extension as specified
I’ve tried using this command to recursively search a folder and print .wav files, showing only the file names (not the location): I’ve also tried putting .wav in double quotes like so: When I check the Wav_files.txt file there are also .xml files listed. I only intend to print the .wav files- Wha…
PHP exec sudo script not working despite having sudo rights
My php script: my visudo line (I tripled checked every path) If i remove the ‘sudo’ in the exec() it will execute (i put a touch aaa at the start, with sudo the file isn’t even created so the script doesn’t even begin to execute). The script has exec rights for everyone. I can’t …
Differing CPUID usage from high-level languages
I’m attempting to utilize an x86 ASM function that requires certain processor architecture. I understand that I need to check a specific bit after calling “CPUID standard function 01H”. Below is a C implementation from the CPUID Wikipedia page for calling CPUID: Though the Linux kernel uses …
Bash Jq parse json string
I’ve to call a file and pass a json as parameters in this way (suppose that my file is called test.sh), from bash I need to do something like this: and the content of test.sh is the following the output of -> printf “$system_user” is but the output of -> printf “$accounts” …