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diff --git a/upstream/mageia-cauldron/man1p/who.1p b/upstream/mageia-cauldron/man1p/who.1p new file mode 100644 index 00000000..360fae8a --- /dev/null +++ b/upstream/mageia-cauldron/man1p/who.1p @@ -0,0 +1,317 @@ +'\" et +.TH WHO "1P" 2017 "IEEE/The Open Group" "POSIX Programmer's Manual" +.\" +.SH PROLOG +This manual page is part of the POSIX Programmer's Manual. +The Linux implementation of this interface may differ (consult +the corresponding Linux manual page for details of Linux behavior), +or the interface may not be implemented on Linux. +.\" +.SH NAME +who +\(em display who is on the system +.SH SYNOPSIS +.LP +.nf +who \fB[\fR-mTu\fB] [\fR-abdHlprt\fB] [\fIfile\fB]\fR +.P +who \fB[\fR-mu\fB] \fR-s\fB [\fR-bHlprt\fB] [\fIfile\fB]\fR +.P +who -q \fB[\fIfile\fB]\fR +.P +who am i +.P +who am I +.fi +.SH DESCRIPTION +The +.IR who +utility shall list various pieces of information about accessible +users. The domain of accessibility is implementation-defined. +.P +Based on the options given, +.IR who +can also list the user's name, terminal line, login time, elapsed time +since activity occurred on the line, and the process ID of the command +interpreter for each current system user. +.SH OPTIONS +The +.IR who +utility shall conform to the Base Definitions volume of POSIX.1\(hy2017, +.IR "Section 12.2" ", " "Utility Syntax Guidelines". +.P +The following options shall be supported. The metavariables, such as +<\fIline\fP>, refer to fields described in the STDOUT section. +.IP "\fB\-a\fP" 10 +Process the implementation-defined database or named file with the +.BR \-b , +.BR \-d , +.BR \-l , +.BR \-p , +.BR \-r , +.BR \-t , +.BR \-T +and +.BR \-u +options turned on. +.IP "\fB\-b\fP" 10 +Write the time and date of the last system reboot. The system reboot +time is the time at which the implementation is able to commence +running processes. +.IP "\fB\-d\fP" 10 +Write a list of all processes that have expired and not been respawned +by the +.IR init +system process. The <\fIexit\fP> field shall appear for dead processes +and contain the termination and exit values of the dead process. This +can be useful in determining why a process terminated. +.IP "\fB\-H\fP" 10 +Write column headings above the regular output. +.IP "\fB\-l\fP" 10 +(The letter ell.) List only those lines on which the system is waiting +for someone to login. The <\fIname\fP> field shall be +.BR LOGIN +in such cases. Other fields shall be the same as for user entries +except that the <\fIstate\fP> field does not exist. +.IP "\fB\-m\fP" 10 +Output only information about the current terminal. +.IP "\fB\-p\fP" 10 +List any other process that is currently active and has been previously +spawned by +.IR init . +.IP "\fB\-q\fP" 10 +(Quick.) List only the names and the number of users currently logged +on. When this option is used, all other options shall be ignored. +.IP "\fB\-r\fP" 10 +Write the current +.IR run-level +of the +.IR init +process. +.IP "\fB\-s\fP" 10 +List only the <\fIname\fR>, <\fIline\fR>, and <\fItime\fR> fields. +This is the default case. +.IP "\fB\-t\fP" 10 +Indicate the last change to the system clock. +.IP "\fB\-T\fP" 10 +Show the state of each terminal, as described in the STDOUT section. +.IP "\fB\-u\fP" 10 +Write ``idle time'' for each displayed user in addition to any other +information. The idle time is the time since any activity occurred on +the user's terminal. The method of determining this is unspecified. +This option shall list only those users who are currently logged in. +The <\fIname\fP> is the user's login name. The <\fIline\fP> is the name +of the line as found in the directory +.BR /dev . +The <\fItime\fP> is the time that the user logged in. The +<\fIactivity\fP> is the number of hours and minutes since activity last +occurred on that particular line. A dot indicates that the terminal has +seen activity in the last minute and is therefore ``current''. If more +than twenty-four hours have elapsed or the line has not been used since +boot time, the entry shall be marked <\fIold\fP>. This field is useful +when trying to determine whether a person is working at the terminal or +not. The <\fIpid\fP> is the process ID of the user's login process. +.SH OPERANDS +The following operands shall be supported: +.IP "\fBam\ i\fR,\ \fBam\ I\fR" 10 +In the POSIX locale, limit the output to describing the invoking user, +equivalent to the +.BR \-m +option. The +.BR am +and +.BR i +or +.BR I +must be separate arguments. +.IP "\fIfile\fR" 10 +Specify a pathname of a file to substitute for the +implementation-defined database of logged-on users that +.IR who +uses by default. +.SH STDIN +Not used. +.SH "INPUT FILES" +None. +.SH "ENVIRONMENT VARIABLES" +The following environment variables shall affect the execution of +.IR who : +.IP "\fILANG\fP" 10 +Provide a default value for the internationalization variables that are +unset or null. (See the Base Definitions volume of POSIX.1\(hy2017, +.IR "Section 8.2" ", " "Internationalization Variables" +for the precedence of internationalization variables used to determine +the values of locale categories.) +.IP "\fILC_ALL\fP" 10 +If set to a non-empty string value, override the values of all the +other internationalization variables. +.IP "\fILC_CTYPE\fP" 10 +Determine the locale for the interpretation of sequences of bytes of +text data as characters (for example, single-byte as opposed to +multi-byte characters in arguments). +.IP "\fILC_MESSAGES\fP" 10 +.br +Determine the locale that should be used to affect the format and +contents of diagnostic messages written to standard error. +.IP "\fILC_TIME\fP" 10 +Determine the locale used for the format and contents of the date and +time strings. +.IP "\fINLSPATH\fP" 10 +Determine the location of message catalogs for the processing of +.IR LC_MESSAGES . +.IP "\fITZ\fP" 10 +Determine the timezone used when writing date and time information. If +.IR TZ +is unset or null, an unspecified default timezone shall be used. +.SH "ASYNCHRONOUS EVENTS" +Default. +.SH STDOUT +The +.IR who +utility shall write its default format to the standard output in an +implementation-defined format, subject only to the requirement of +containing the information described above. +.P +XSI-conformant systems shall write the default information to the +standard output in the following general format: +.sp +.RS 4 +.nf + +<\fIname\fR>\fB[\fR<\fIstate\fR>\fB]\fR<\fIline\fR><\fItime\fR>\fB[\fR<\fIactivity\fR>\fB][\fR<\fIpid\fR>\fB][\fR<\fIcomment\fR>\fB][\fR<\fIexit\fR>\fB]\fR +.fi +.P +.RE +.P +For the +.BR \-b +option, <\fIline\fP> shall be +.BR \(dqsystem boot\(dq . +The <\fIname\fP> is unspecified. +.P +The following format shall be used for the +.BR \-T +option: +.sp +.RS 4 +.nf + +"%s %c %s %s\en" <\fIname\fR>, <\fIterminal state\fR>, <\fIterminal name\fR>, + <\fItime of login\fR> +.fi +.P +.RE +.P +where <\fIterminal\ state\fP> is one of the following characters: +.IP "\fR+\fR" 8 +The terminal allows write access to other users. +.IP "\fR\-\fR" 8 +The terminal denies write access to other users. +.IP "\fR?\fR" 8 +The terminal write-access state cannot be determined. +.IP "\fR<space>\fR" 8 +This entry is not associated with a terminal. +.P +In the POSIX locale, the <\fItime\ of\ login\fP> shall be equivalent in +format to the output of: +.sp +.RS 4 +.nf + +date +"%b %e %H:%M" +.fi +.P +.RE +.P +If the +.BR \-u +option is used with +.BR \-T , +the idle time shall be added to the end of the previous format in an +unspecified format. +.SH STDERR +The standard error shall be used only for diagnostic messages. +.SH "OUTPUT FILES" +None. +.SH "EXTENDED DESCRIPTION" +None. +.SH "EXIT STATUS" +The following exit values shall be returned: +.IP "\00" 6 +Successful completion. +.IP >0 6 +An error occurred. +.SH "CONSEQUENCES OF ERRORS" +Default. +.LP +.IR "The following sections are informative." +.SH "APPLICATION USAGE" +The name +.IR init +used for the system process is the most commonly used on historical +systems, but it may vary. +.P +The ``domain of accessibility'' referred to is a broad concept that +permits interpretation either on a very secure basis or even to allow a +network-wide implementation like the historical +.IR rwho . +.SH EXAMPLES +None. +.SH RATIONALE +Due to differences between historical implementations, the base options +provided were a compromise to allow users to work with those +functions. The standard developers also considered removing all the +options, but felt that these options offered users valuable +functionality. Additional options to match historical systems are +available on XSI-conformant systems. +.P +It is recognized that the +.IR who +command may be of limited usefulness, especially in a multi-level +secure environment. The standard developers considered, however, that +having some standard method of determining the ``accessibility'' of +other users would aid user portability. +.P +No format was specified for the default +.IR who +output for systems not supporting the XSI option. In such a +user-oriented command, designed only for human use, this was not +considered to be a deficiency. +.P +The format of the terminal name is unspecified, but the descriptions of +.IR ps , +.IR talk , +and +.IR write +require that they use the same format. +.P +It is acceptable for an implementation to produce no output for +an invocation of +.IR who +.BR mil . +.SH "FUTURE DIRECTIONS" +None. +.SH "SEE ALSO" +.IR "\fImesg\fR\^" +.P +The Base Definitions volume of POSIX.1\(hy2017, +.IR "Chapter 8" ", " "Environment Variables", +.IR "Section 12.2" ", " "Utility Syntax Guidelines" +.\" +.SH COPYRIGHT +Portions of this text are reprinted and reproduced in electronic form +from IEEE Std 1003.1-2017, Standard for Information Technology +-- Portable Operating System Interface (POSIX), The Open Group Base +Specifications Issue 7, 2018 Edition, +Copyright (C) 2018 by the Institute of +Electrical and Electronics Engineers, Inc and The Open Group. +In the event of any discrepancy between this version and the original IEEE and +The Open Group Standard, the original IEEE and The Open Group Standard +is the referee document. The original Standard can be obtained online at +http://www.opengroup.org/unix/online.html . +.PP +Any typographical or formatting errors that appear +in this page are most likely +to have been introduced during the conversion of the source files to +man page format. To report such errors, see +https://www.kernel.org/doc/man-pages/reporting_bugs.html . |