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Certainly! Sending a SIGINT (Signal Interrupt) to a Python script from a Bash script can be useful in various scenarios. For example, you may want to gracefully stop a running Python script from a higher-level control script. Here's a step-by-step tutorial with code examples:
Let's start by creating a simple Python script that will handle the SIGINT signal. Save the following code in a file named python_script.py:
This script sets up a signal handler for SIGINT and then enters a loop to simulate a long-running process.
Now, let's create a Bash script that will send a SIGINT signal to the Python script. Save the following code in a file named send_sigint.sh:
This Bash script uses pgrep to find the PID of the running Python script and then sends a SIGINT signal to it using the kill command.
Make the Bash script executable by running the following command in the terminal:
Now, you can run the Python script in one terminal:
In another terminal, run the Bash script to send a SIGINT signal to the Python script:
You should see the Python script handling the SIGINT signal and performing cleanup before exiting.
This tutorial provides a basic example, and you can customize the Python script and Bash script according to your specific use case and requirements.
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