| | 1 | .\" Copyright (c) 1980, 1990, 1991, 1993 |
| | 2 | .\" The Regents of the University of California. All rights reserved. |
| | 3 | .\" |
| | 4 | .\" Redistribution and use in source and binary forms, with or without |
| | 5 | .\" modification, are permitted provided that the following conditions |
| | 6 | .\" are met: |
| | 7 | .\" 1. Redistributions of source code must retain the above copyright |
| | 8 | .\" notice, this list of conditions and the following disclaimer. |
| | 9 | .\" 2. Redistributions in binary form must reproduce the above copyright |
| | 10 | .\" notice, this list of conditions and the following disclaimer in the |
| | 11 | .\" documentation and/or other materials provided with the distribution. |
| | 12 | .\" 4. Neither the name of the University nor the names of its contributors |
| | 13 | .\" may be used to endorse or promote products derived from this software |
| | 14 | .\" without specific prior written permission. |
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| | 16 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 17 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 18 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 19 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 20 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| | 23 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| | 25 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 26 | .\" SUCH DAMAGE. |
| | 27 | .\" |
| | 28 | .\" @(#)w.1 8.1 (Berkeley) 6/6/93 |
| | 29 | .\" $FreeBSD: src/usr.bin/w/w.1,v 1.20 2005/02/13 22:25:25 ru Exp $ |
| | 30 | .\" |
| | 31 | .Dd June 6, 1993 |
| | 32 | .Dt W 1 |
| | 33 | .Os |
| | 34 | .Sh NAME |
| | 35 | .Nm w |
| | 36 | .Nd "display who is logged in and what they are doing" |
| | 37 | .Sh SYNOPSIS |
| | 38 | .Nm |
| | 39 | .Op Fl hin |
| | 40 | .Op Ar user ... |
| | 41 | .Sh DESCRIPTION |
| | 42 | The |
| | 43 | .Nm |
| | 44 | utility prints a summary of the current activity on the system, |
| | 45 | including what each user is doing. |
| | 46 | The first line displays the current time of day, how long the system has |
| | 47 | been running, the number of users logged into the system, and the load |
| | 48 | averages. |
| | 49 | The load average numbers give the number of jobs in the run queue averaged |
| | 50 | over 1, 5 and 15 minutes. |
| | 51 | .Pp |
| | 52 | The fields output are the user's login name, the name of the terminal the |
| | 53 | user is on, the host from which the user is logged in, the time the user |
| | 54 | logged on, the time since the user last typed anything, |
| | 55 | and the name and arguments of the current process. |
| | 56 | .Pp |
| | 57 | The options are as follows: |
| | 58 | .Bl -tag -width Ds |
| | 59 | .It Fl h |
| | 60 | Suppress the heading. |
| | 61 | .It Fl i |
| | 62 | Output is sorted by idle time. |
| | 63 | .El |
| | 64 | .Pp |
| | 65 | If one or more |
| | 66 | .Ar user |
| | 67 | names are specified, the output is restricted to those users. |
| | 68 | .Sh COMPATIBILITY |
| | 69 | The |
| | 70 | .Fl M , |
| | 71 | .FL N , |
| | 72 | .Fl d , |
| | 73 | .Fl f , |
| | 74 | .Fl l , |
| | 75 | .Fl n , |
| | 76 | .Fl s , |
| | 77 | and |
| | 78 | .Fl w |
| | 79 | flags are no longer supported. |
| | 80 | .Sh SEE ALSO |
| | 81 | .Xr finger 1 , |
| | 82 | .Xr ps 1 , |
| | 83 | .Xr uptime 1 , |
| | 84 | .Xr who 1 |
| | 85 | .Sh HISTORY |
| | 86 | The |
| | 87 | .Nm |
| | 88 | command appeared in |
| | 89 | .Bx 3.0 . |
| | 90 | .Sh BUGS |
| | 91 | The notion of the |
| | 92 | .Dq current process |
| | 93 | is muddy. |
| | 94 | The current algorithm is ``the highest numbered process on the terminal |
| | 95 | that is not ignoring interrupts, or, if there is none, the highest numbered |
| | 96 | process on the terminal''. |
| | 97 | This fails, for example, in critical sections of programs like the shell |
| | 98 | and editor, or when faulty programs running in the background fork and fail |
| | 99 | to ignore interrupts. |
| | 100 | (In cases where no process can be found, |
| | 101 | .Nm |
| | 102 | prints |
| | 103 | .Dq \- . ) |
| | 104 | .Pp |
| | 105 | The |
| | 106 | .Tn CPU |
| | 107 | time is only an estimate, in particular, if someone leaves a background |
| | 108 | process running after logging out, the person currently on that terminal is |
| | 109 | .Dq charged |
| | 110 | with the time. |
| | 111 | .Pp |
| | 112 | Background processes are not shown, even though they account for |
| | 113 | much of the load on the system. |
| | 114 | .Pp |
| | 115 | Sometimes processes, typically those in the background, are printed with |
| | 116 | null or garbaged arguments. |
| | 117 | In these cases, the name of the command is printed in parentheses. |
| | 118 | .Pp |
| | 119 | The |
| | 120 | .Nm |
| | 121 | utility does not know about the new conventions for detection of background |
| | 122 | jobs. |
| | 123 | It will sometimes find a background job instead of the right one. |
| | 124 | .Pp |
| | 125 | Long hostnames and IPv6 addresses may be truncated; however, the |
| | 126 | .Xr who 1 |
| | 127 | utility will display full hostnames. |
projects / apple / shell_cmds.git / blame_incremental