Ask Your Question
0

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

asked 2021-05-01 11:00:00 +0000

djk gravatar image

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted
0

answered 2022-12-13 05:00:00 +0000

lakamha gravatar image

updated 2023-04-11 12:29:31 +0000

qstack gravatar image

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.

edit flag offensive delete link more

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account. This space is reserved only for answers. If you would like to engage in a discussion, please instead post a comment under the question or an answer that you would like to discuss

Add Answer


Question Tools

Stats

Asked: 2021-05-01 11:00:00 +0000

Seen: 17 times

Last updated: Apr 11 '23