unix - What does this paragraph in the ps man page mean? -


i not understand following description:

                 lift bsd-style "only yourself" restriction,                    imposed upon set of processes when bsd-style                    (without "-") options used or when ps personality                    setting bsd-like. set of processes selected in                    manner in addition set of processes selected                    other means. alternate description option                    causes ps list processes terminal (tty), or                    list processes when used x                    option.

only thing understand an alternate description xxxx. lift bsd-style "only yourself" restriction , other sentences mean?

by default, bsd version of ps (and, extension, linux's ps when treated bsd ps passing bsd-style options or setting ps_personality or cmd_env environment variable bsd) lists processes owned user running ps.

the a argument lifts restriction , show processes regardless of owner.


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