popen with app that never returns

This is a discussion on popen with app that never returns within the Linux Programming forums, part of the Platform Specific Boards category; I'm wanting to get the output from an application that never returns xscreensaver-command -watch I'm basically wanting my application to ...

  1. #1
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    popen with app that never returns

    I'm wanting to get the output from an application that never returns

    xscreensaver-command -watch

    I'm basically wanting my application to sleep for x amount of time if it discovers that the screensaver has kicked in. I'm just curious what effect it might have trying to read the output of an application that never returns and how I would capture its output at various intervals.

    Thanks

  2. #2
    cwr
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    This more appropriately belongs in the misnamed "Linux programming" forum.

    It should be okay to use popen for this. To get the output, you might do a select or poll to see if there's data available for reading on the descriptor.

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