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Editorial Team
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Asked: 2026-05-15T22:09:42+00:00

I need to run a linux command such as df from my linux daemon

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I need to run a linux command such as “df” from my linux daemon to know free space,used space, total size of the parition and other info. I have options like calling system,exec,popen etc..

  1. But as this each command spawn a new process , is this not possible to run the commands in the same process from which it is invoked?

  2. And at the same time as I need to run this command from a linux daemon, as my daemon should not hold any terminal. Will it effect my daemon behavior?

Or is their any C or C++ standard API for getting the mounted paritions information

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1 Answer

  1. Editorial Team

    There is no standard API, as this is an OS-specific concept.

    However,

    1. You can parse /proc/mounts (or /etc/mtab) with (non-portable) getmntent/getmntent_r helper functions.
    2. Using information about mounted filesystems, you can get its statistics with statfs.
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