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A persistent object is an object that survives reboot. On [[Unix]], files and directories are persistent but processes and [[unix/file_descriptor]]s are not. [[microkernel/EROS]] is an example of an orthogonally persistent system: processes and [[capabilities|capability]] also survive reboot. To a process, it generally only looks as if it had not been scheduled for a long time; the rest of its environment remains essentially the indistinguishable.
The GNU/Hurd is not a persistent system: there are no persistent [[capabilities|capability]]. All data that is stored in files in the file system, is serialized.
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- Section Writing Things Down in [[!toggle id=shapiro_capintro_1999 text="[shapiro_capintro_1999]"]].
[[!tag open_issue_documentation]]