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BŁĘDY
Since ps cannot run faster than the system and is run as any other
scheduled process, the information it displays can never be exact.

UWAGI
When printing using the command keyword, a process that has exited and
has a parent that has not yet waited for the process (in other words, a
zombie) is listed as ``<defunct>'', and a process which is blocked while
trying to exit is listed as ``<exiting>''. ps makes an educated guess as
to the file name and arguments given when the process was created by
examining memory or the swap area. The method is inherently somewhat
unreliable and in any event a process is entitled to destroy this
information, so the names cannot be depended on too much. The ucomm
(accounting) keyword can, however, be depended on.