I am writing a C++ program to copy one file from one directory to another. I don’t want to use C++ 17 features. I have already implemented this in the following code. I am on Linux and I want to use the OS cp command to do this. I have written this code. The error is: cp: source: No such
Tag: linux
Pulseaudio – How can multiplexing multiple channels into one?
I’m trying to multiplex (mux) the multiple sinks into one sink. like below [sink #1 / 2ch] – (left) —- (front left) – [sink #3 / 4ch] └ (right) —- (front right) ┘ [sink #2 / 2ch] – (left) —- (rear left) ┘ └ (right) —- (rear right) ┘ As I know, there is module-re…
How do I pass “>>” or “<<" to my script without the terminal trying to interpret it as me either appending to something or getting stdin?
My python script can take a series of bitwise operators as one of its arguments. They all work fine except for “=<<” which is roll left, and “=>>” which is roll right. I run my script like ./script.py -b +4,-4,=>>10,=<<1, where anything after -b can be any combi…
How to make python script type when prompted on shell
Something similar to this: How to make python script press ‘enter’ when prompted on Shell Like that question, if I have test_enter.py: and this file: But instead of just a new line, I want it to type something then press “enter”. Is that possible? Answer Script to call: Caller script: …
Executing bash shell script accepting argument and running in background
I have written a shell script run.sh to trigger a few tasks based on the user’s input The tasks 1,2 … 6 are php scripts that are run like /usr/bin/php task1.php $TIME with $TIME as an argument for the php script etc… The script runs fine when I type bash run.sh but since tasks 1-6 takes a lo…
error: [Errno 13] Permission denied: ‘./configure’ when use pip3 install matplotlib on termux
I’m newbie I tried to install the matplotlib package using pip but got this error python: 3.9.0 pip: 20.2.4 Is there a way to solve this problem? I followed the instructions of https://wiki.termux.com/wiki/Python https://matplotlib.org/users/installing.html#installing-an-official-release but still got t…
Comparing epoch timestamps in a log and checking if x time has elapsed between the previous and current timestamp in the list
I have a log file consisting of a list of epoch 19-digit timestamps, for example I would like to iterate through this list, and compare the previous timestamp to the current timestamp in the list and echo a message if x duration of inactivity as occurred, ex: What would be the most efficient method to iterate…
Install Azure CLI on VM using Chef
I am currently writing a script(recipe) with Chef that executes on an Azure (Linux) virtual machine. For my purposes I need to install Azure CLI on that VM. I followed these steps from the documentation. Unfortunately, I get the error that I can’t use “sudo”, and if I remove “sudo̶…
jupyter notebook can’t detect conda kernels only on boot
I’m trying to automatically start jupyter server on boot. (ec2, amazon linux) I got the jupyter server working and correctly loading all the conda kernels. and I tried to run jupyter on boot. (tried rc.local, systemd, crontab and all fails to load conda kernels and only loads basic python2 and python3 k…
Address already in use – FastAPI
I keep getting [Errno 98] Address already in use But the address is not in use. I tried to change the ip and port but It isn’t budging. uvicorn main:app –reload also tried uvicorn main:app –host=172.0.0.2 –port=5000 then it gives [Errno 99] error while attempting to bind on address (&#…