I want to write a function computeWriteSet that takes an arbitrary function f as an argument and (1) executes the function f and (2) returns the set of places modified or written to (addresses/pages/objects) during f’s execution. What options exist for implementing it? What are their tradeoffs (in which…
Problem with special filenames when trying to pull android files into windows pc recursively using adb
I want to download all files from /data/data/foo folder to my pc. I am using adb to connect with my phone. To download files I am using: And here’s response: And in fact, only this is copied: What I am doing wrong here? Answer The problem: What you’re doing is right (the command is correct), but t…
which node gives quite strange result
Perhaps this seems silly, but when I run which node today it gives me something quite different as instead of something as However when I run sudo which node: I am wondering how this could happen? My Silly Questions how which command works to locate the path for the command; which node exactly selected based …
Can’t create image of linux vm in azure – generalizing erases my work
I’m obviously missing something VERY basic in my logic. Can someone help. My problem: I create a Linux VM in Azure through the Azure CLI. I ssh in, and provision my VM with the packages/programs I want (i.e. downloading Anaconda, Keras, etc.) PROBLEM – When I follow steps to capture an image (AZ_c…
In output, echo command printed new line when after printed variable
This is my small bash script code and i want to print the number of files created in the directory : My expected output is : but i got the below output: can you help what went wrong in my above code? Also please suggest if this is the correct way to print the number of files in the directory
Why does running C code in Vim skip scanf()?
I’m using neovim in arch linux with the gcc C compiler, this is what I use in my .vimrc to compile and run map <F5> :w <CR> :!gcc % -o %< && ./%< <CR> The issue is that my code will run fine but any scanf() functions won’t prompt an input and will be ignored as the …
C socket programming errors
It’s been an hour since I started looking for THE error. I just started C sockets. The program exits with code -1 after printing “Error 1 connection error”. The server in online, it’s a netcat server. Where did I messed up ? Answer Due to operator precedence, the expression is actually…
Difference between sudo git pull and sudo git pull git@bitbucket.org:user/project.git
I’m trying to pull code off a remote bitbucket repository to my master branch on Linux server. Don’t understand the difference between the following 2 approaches to pulling code (connecting to bitbucket via SSH): Both approaches seem to update the local master branch (on Linux server) with code fr…
How do I check if a file is an executable in nim?
How do I check if a file is an executable on Linux using Nim? Thanks in advance. Answer You can use getFilePermissions and check if a certain FilePermission is in the set it returns. You’d probably want to check if all three different Exec variants are in it:
How can I execute two commands in terminal using Python’s subprocess module?
How can I use the subprocess module (i.e. call, check_call and Popen) to run more than one command? For instance, lets say I wanted to execute the ls command twice in quick sucession, the following syntax does not work returns: Answer You can use && or ;: The difference is that in case of && t…