Is there a variant of the "cp -a" command that avoids copying from other filesystems?

filesystems cp file-copy
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On a machine with the GNU Coreutils (most Linux distros), the cp command has -x.

From cp man page:

-x, --one-file-system
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Cerber
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Cerber

Updated on September 18, 2022

Comments

  • Cerber
    Cerber almost 2 years

    Let's say I have a directory /data/something with the following subdirs:

    /data/something/iowa
/data/something/wyoming
/data/something/burkinafaso
/data/something/slovenia

    All four subdirs have content. burkinafaso and slovenia are mount points; iowa and wyoming are not. I want to copy the directory structure in such a way that iowa and wyoming get copied recursively with all their subtrees, but burkinafaso and slovenia are copied as empty. cp doesn't seem to have such a switch, unlike du -x and find -xdev. What's the best way to do what I want?

    • Gilles 'SO- stop being evil'
      Gilles 'SO- stop being evil' almost 9 years
      What strange system do you have where du has a -x option but cp doesn't?
    • Cerber
      Cerber almost 9 years
      I am sorry. I DO know how to use a manpage, but somehow managed to miss the -x switch in there.

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