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chroot.2: Mention /proc/[pid]/root
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -169,6 +169,12 @@ inherits its parent's root directory.
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The root directory is left unchanged by
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.BR execve (2).
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.PP
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The magic symbolic link,
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.IR /proc/[pid]/root ,
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can be used to discover a process's root directory; see
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.BR proc (5)
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for details.
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.PP
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FreeBSD has a stronger
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.BR jail ()
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system call.
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