I want to kill a process and its son process with trap command: vim waiting.sh trap "kill $$" EXIT sleep 10000 Now run it in background: debian@debian:~$ bash waiting.sh & [1] 29590 Have a look at all processes debian@debian:~$ ps…
My Dockerfile extends from php:8.1-apache. The following happens while developing: The application creates log files (as www-data, 33:33) I create files (as the image's default user root, 0:0) within the container These files are mounted on my host where I'm…
I am trying to implement a graceful shutdown of a process when its output is being piped to another process. I am testing the code bellow by piping its output: ./a.out | less and pressing q when a prompt appears.…
I'm using different Docker images to run code and noticed the following: $ time sudo docker stop $(sudo docker run -dit --rm centos:latest) 509285200bcf4ea8389219319b6c4af6554abf9f1c9d9ffb152cd109b6a21453 real 0m1,374s user 0m0,087s sys 0m0,027s $ time sudo docker stop $(sudo docker run -dit --rm…
I was studying re-entrancy in programming. On this site of IBM (really good one). I have founded a code, copied below. It's the first code that comes rolling down the website. The code tries showing the issues involving shared access…