-a Write information for all processes associated with terminals. Implementations may omit session
leaders from this list.
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-A Write information for all processes.
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-d Write information for all processes, except session leaders.
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-e Write information for all processes. (Equivalent to -A.)
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-f Generate a full listing. (See the STDOUT section for the contents of a full listing.)
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-g grouplist
Write information for processes whose session leaders are given in grouplist. The application
shall ensure that the grouplist is a single argument in the form of a <blank> or comma-separated
list.
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-G grouplist
Write information for processes whose real group ID numbers are given in grouplist. The
application shall ensure that the grouplist is a single argument in the form of a <blank> or
comma-separated list.
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-l Generate a long listing. (See STDOUT for the contents of a long listing.)
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-n namelist
Specify the name of an alternative system namelist file in place of the default. The name of the
default file and the format of a namelist file are unspecified.
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-o format
Write information according to the format specification given in format. This is fully described
in the STDOUT section. Multiple -o options can be specified; the format specification shall be
interpreted as the <space>-separated concatenation of all the format option-arguments.
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-p proclist
Write information for processes whose process ID numbers are given in proclist. The application
shall ensure that the proclist is a single argument in the form of a <blank> or comma-separated
list.
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-t termlist
Write information for processes associated with terminals given in termlist. The application shall
ensure that the termlist is a single argument in the form of a <blank> or comma-separated list.
Terminal identifiers shall be given in an implementation-defined format. On XSI-conformant
systems, they shall be given in one of two forms: the device's filename (for example, tty04) or,
if the device's filename starts with tty, just the identifier following the characters tty (for
example, "04" ).
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-u userlist
Write information for processes whose user ID numbers or login names are given in userlist. The
application shall ensure that the userlist is a single argument in the form of a <blank> or comma-
separated list. In the listing, the numerical user ID shall be written unless the -f option is
used, in which case the login name shall be written.
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-U userlist
Write information for processes whose real user ID numbers or login names are given in userlist.
The application shall ensure that the userlist is a single argument in the form of a <blank> or
comma-separated list.
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