Task: Understanding and Using kill -0 for Process Existence Checking

Task: Understanding and Using kill -0 for Process Existence Checking: a task in Terminal-Lego-15k (Harbor dataset). In shell scripting, the kill command is commonly used to send signals to processes. While signal numbers typically start from 1 (e.g., SIGHUP=1, SIGINT=2, SIGKILL=9), there is a…