How can popen() be used to direct streaming data to TAR?

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popen() can be used to directly stream data to TAR by creating a subprocess with the TAR command and specifying the stdout argument as the output of popen().

Here's an example code snippet:

import subprocess

# Define the command to be executed
command = 'tar -cvf archive.tar -'

# Use popen() to create a subprocess with the command
tar_process = subprocess.Popen(command.split(), stdin=subprocess.PIPE)

# Open the file containing the streaming data
with open('streaming_data.txt', 'rb') as data:
    # Stream the data to TAR process
    tar_process.communicate(input=data.read())

In this example, the command specified is to create a new TAR archive named 'archive.tar' and to read data from stdin (specified as '-'). By using popen(), we create a subprocess of the TAR command and redirect the input to be the data read from the file 'streaming_data.txt'. The communicate() method is used to send the data to the subprocess and wait for the process to finish.