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Annotation of src/usr.bin/fstat/fuser.1, Revision 1.1

1.1     ! millert     1: .\"    $OpenBSD$
        !             2: .\"
        !             3: .\" Copyright (c) 2002 Peter Werner <peterw@ifost.org.au>
        !             4: .\" All rights reserved.
        !             5: .\"
        !             6: .\" Redistribution and use in source and binary forms, with or without
        !             7: .\" modification, are permitted provided that the following conditions
        !             8: .\" are met:
        !             9: .\"
        !            10: .\" 1. Redistributions of source code must retain the above copyright
        !            11: .\"    notice, this list of conditions and the following disclaimer.
        !            12: .\" 2. The name of the author may not be used to endorse or promote products
        !            13: .\"    derived from this software without specific prior written permission.
        !            14: .\"
        !            15: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
        !            16: .\" INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
        !            17: .\" AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
        !            18: .\" THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
        !            19: .\" EXEMPLARY, OR CONSEQUENTIAL  DAMAGES (INCLUDING, BUT NOT LIMITED TO,
        !            20: .\" PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
        !            21: .\" OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
        !            22: .\" WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
        !            23: .\" OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
        !            24: .\" ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
        !            25: .\"
        !            26: .Dd $Mdocdate$
        !            27: .Dt FUSER 1
        !            28: .Os
        !            29: .Sh NAME
        !            30: .Nm fuser
        !            31: .Nd identify process IDs holding specific files open
        !            32: .Sh SYNOPSIS
        !            33: .Nm
        !            34: .Op Fl cfku
        !            35: .Op Fl M Ar core
        !            36: .Op Fl N Ar system
        !            37: .Op Fl s Ar signal
        !            38: .Ar
        !            39: .Sh DESCRIPTION
        !            40: The
        !            41: .Nm
        !            42: utility writes to standard output the process IDs of processes running
        !            43: on the local system that have one or more of the named files open.
        !            44: If
        !            45: .Ar file
        !            46: is a mounted block device, the output will show all processes having
        !            47: files opened on that file system.
        !            48: .Pp
        !            49: The options are as follows:
        !            50: .Bl -tag -width Ds
        !            51: .It Fl c
        !            52: The file is treated as a mount point and
        !            53: .Nm
        !            54: will report on any files open in the file system.
        !            55: .It Fl f
        !            56: Report only for the named file(s).
        !            57: .It Fl k
        !            58: Send the SIGKILL signal to each process.
        !            59: .It Fl M Ar core
        !            60: Extract values associated with the name list from the specified core
        !            61: instead of the running kernel.
        !            62: .It Fl N Ar system
        !            63: Extract the name list from the specified system instead of the running kernel.
        !            64: .It Fl s Ar signal
        !            65: Send the specified
        !            66: .Ar signal
        !            67: to each process.
        !            68: The
        !            69: .Ar signal
        !            70: may be specified as a signal number or as a symbolic name either with
        !            71: or without the
        !            72: .Dq SIG
        !            73: prefix.
        !            74: Signal names are not case sensitive.
        !            75: For example, the following signal arguments are equivalent:
        !            76: .Dq 9 ,
        !            77: .Dq kill ,
        !            78: .Dq SIGKILL .
        !            79: .It Fl u
        !            80: The real user ID of the the process using the file will be printed in brackets
        !            81: to standard error.
        !            82: If the username is unable to be determined, the real user ID will be printed
        !            83: instead.
        !            84: .El
        !            85: .Pp
        !            86: The
        !            87: .Fl c
        !            88: and
        !            89: .Fl f
        !            90: options are mutually exclusive.
        !            91: .Pp
        !            92: The name of the file followed by a colon
        !            93: .Pq Sq \&:
        !            94: is printed to standard error.
        !            95: The following characters may be printed to standard error after the process ID
        !            96: if the described conditions are true:
        !            97: .Pp
        !            98: .Bl -tag -width Ds -offset indent -compact
        !            99: .It c
        !           100: The file is the process's current working directory.
        !           101: .It r
        !           102: The file is the process's root directory.
        !           103: .El
        !           104: .Pp
        !           105: .Ex -std fuser
        !           106: .Sh EXAMPLES
        !           107: Print the process IDs of any processes holding files open under the
        !           108: .Ar /mnt
        !           109: filesystem:
        !           110: .Pp
        !           111: .Dl $ fuser -c /mnt
        !           112: .Pp
        !           113: Send SIGTERM to any process holding a file open under the
        !           114: .Ar /mnt
        !           115: filesystem:
        !           116: .Pp
        !           117: .Dl # fuser -c -s term /mnt
        !           118: .Pp
        !           119: Report on all files opened under the filesystem on which
        !           120: .Ar /dev/wd0a
        !           121: is mounted:
        !           122: .Pp
        !           123: .Dl $ fuser /dev/wd0a
        !           124: .Pp
        !           125: Report on all processes currently holding
        !           126: .Ar /dev/wd0a
        !           127: open:
        !           128: .Pp
        !           129: .Dl $ fuser -f /dev/wd0a
        !           130: .Sh SEE ALSO
        !           131: .Xr fstat 1 ,
        !           132: .Xr kill 1 ,
        !           133: .Xr signal 3 ,
        !           134: .Xr mount 8
        !           135: .Sh STANDARDS
        !           136: The
        !           137: .Nm
        !           138: utility is compliant with the
        !           139: .St -p1003.1-2008
        !           140: specification.
        !           141: .Pp
        !           142: The flags
        !           143: .Op Fl ks
        !           144: are extensions to that specification.