221 lines
7.6 KiB
Groff
221 lines
7.6 KiB
Groff
.\" -*- nroff -*-
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.TH FINDMNT 8 "April 2010" "util-linux" "System Administration"
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.SH NAME
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findmnt \- find a filesystem
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.SH SYNOPSIS
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.B findmnt
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.RB [ options ]
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.sp
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.B findmnt
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.RB [ options ]
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.IR device | mountpoint
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.sp
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.B findmnt
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.RB [ options ]
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.RB [ \--source ]
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.IR device
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.RB [ \--target ]
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.IR mountpoint
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.SH DESCRIPTION
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.B findmnt
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will list all mounted filesytems or search for a filesystem. The
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.B findmnt
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command is able to search in
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.IR /etc/fstab ,
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.IR /etc/mtab
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or
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.IR /proc/self/mountinfo .
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If
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.IR device
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or
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.IR mountpoint
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is not given, all filesystems are shown.
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.PP
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The device may be specified by device name, maj:min, filesystem LABEL or UUID
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or partition PARTUUID or PARTLABEL. Note that device name may be interpreted
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as mountpoint (and vice versa) if --target or --source options are not
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specified.
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.PP
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The command prints all mounted filesystems in the tree-like format by default.
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.SH OPTIONS
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.IP "\fB\-h, \-\-help\fP"
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Print help and exit.
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.IP "\fB\-s, \-\-fstab\fP"
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Search in
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.IR /etc/fstab .
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The output is in the list format (see --list).
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.IP "\fB\-m, \-\-mtab\fP"
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Search in
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.IR /etc/mtab .
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The output is in the list format (see \fB\-\-list\fP).
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.IP "\fB\-k, \-\-kernel\fP"
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Search in
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.IR /proc/self/mountinfo .
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The output is in the tree-like format. This is the default.
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.IP "\fB\-A, \-\-all\fP"
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Disable all built-in filters and print all filesystems.
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.IP "\fB\-a, \-\-ascii\fP"
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Use ascii characters for tree formatting.
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.IP "\fB\-c, \-\-canonicalize\fP"
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Canonicalize all printed paths.
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.IP "\fB\-D, \-\-df\fP"
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Imitate the output of df(1). This option is equivalent to
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"-o SOURCE,FSTYPE,SIZE,USED,AVAIL,USE%,TARGET", but excludes all
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pseudo filesystem. Use \fB\-\-all\fP to print all filesystems.
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.IP "\fB\-d, \-\-direction \fIword\fP"
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The search direction -
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.IR forward
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or
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.IR backward .
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.IP "\fB\-e, \-\-evaluate\fP"
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Convert all tags (LABEL, UUID, PARTUUID or PARTLABEL) to the device names.
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.IP "\fB\-F, \-\-tab\-file \fIpath\fP"
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Search in an alternative file, if used with \fB\-\-fstab\fP, \fB\-\-mtab\fP
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or \fB\-\-kernel\fP then overwrites the default paths, if specified more than
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once, then tree-like output is disabled (see the \fB\-\-list\fP option).
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.IP "\fB\-f, \-\-first\-only\fP"
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Print the first matching filesystem only.
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.IP "\fB\-i, \-\-invert\fP"
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Invert the sense of matching.
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.IP "\fB\-l, \-\-list\fP"
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Use the list output format. This output format is automatically enabled if the
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output is restricted by \fB\-t\fP, \fB\-O\fP, \fB\-S\fP or \fB\-T\fP
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option and the option \fB\-\-submounts\fP is not used or if more that one
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source file (the option \fB\-F\fP) is specified.
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.IP "\fB\-v, \-\-nofsroot\fP"
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Do not print a [/dir] in the SOURCE column for bind-mounts or btrfs subvolumes.
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.IP "\fB\-N, \-\-task \fItid\fP"
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Use alternative namespace /proc/<tid>/mountinfo rather than the default
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/proc/self/mountinfo. If the option is specified more than once, then
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tree-like output is disabled (see the \fB\-\-list\fP option). See also
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.BR unshare (1)
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command.
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.IP "\fB\-n, \-\-noheadings\fP"
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Do not print a header line.
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.IP "\fB\-u, \-\-notruncate\fP"
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Do not truncate text in columns. The default is to not truncate the
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.BR TARGET ,
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.BR SOURCE ,
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.BR UUID ,
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.BR LABEL ,
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.BR PARTUUID ,
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.BR PARTLABEL
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columns. This option disables text truncation also in all other columns.
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.IP "\fB\-O, \-\-options \fIlist\fP"
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Limit the set of printed filesystems. More than one option
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may be specified in a comma-separated list. The
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.B \-t
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and
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.B \-O
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options are cumulative in effect. It is different from
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.B \-t
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in that each option is matched exactly; a leading
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.I no
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at the beginning does not have global meaning. The "no" could used for
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individual items in the list. The "no" prefix interpratation could be disabled
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by "+" prefix.
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.IP "\fB\-o, \-\-output \fIlist\fP"
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Define output columns. See the \fB\-\-help\fP output to get list of the
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currently supported columns. The
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.BR TARGET
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column contains tree formatting if the
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.B \-\-list
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or
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.B \-\-raw
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options are not specified.
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The default list of columns may be extended if \fIlist\fP is
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specified in the format \fI+list\fP (e.g. \fBfindmnt -o +PROPAGATION\fP).
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.IP "\fB\-p, \-\-poll\fR[\fI=list\fR]\fP"
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Monitor changes in the /proc/self/mountinfo file. Supported actions are: mount,
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umount, remount and move. More than one action may be specified in a
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comma-separated list. All actions are monitored by default.
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The time for which \fB--poll\fR will block can be restricted with the \fB\-\-timeout\fP
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or \fB\-\-first-only\fP options.
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The standard columns always use the new version of the information from the
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mountinfo file, except the umount action which is based on the original
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information cached by
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.BR findmnt (8) .
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The poll mode allows to use extra columns:
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.RS
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.TP
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.B ACTION
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mount, umount, move or remount action name; this column is enabled by default
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.TP
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.B OLD-TARGET
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available for umount and move actions
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.TP
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.B OLD-OPTIONS
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available for umount and remount actions
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.RE
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.IP "\fB\-P, \-\-pairs\fP"
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Use key="value" output format. All potentially unsafe characters are hex-escaped (\\x<code>).
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.IP "\fB\-r, \-\-raw\fP"
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Use raw output format. All potentially unsafe characters are hex-escaped (\\x<code>).
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.IP "\fB\-t, \-\-types \fIlist\fP"
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Limit the set of printed filesystems. More than one type may be
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specified in a comma-separated list. The list of filesystem types can be
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prefixed with
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.I no
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to specify the filesystem types on which no action should be taken. For
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more details see
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.BR mount (8).
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.IP "\fB\-R, \-\-submounts\fP"
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Print recursively all submounts for the selected filesystems. The restrictions
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defined by options \fB\-t\fP, \fB\-O\fP, \fB\-S\fP, \fB\-T\fP and
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\fB\--direction\fP are not applied to submounts. All submounts are always
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printed in tree-like order. The option enables the tree-like output format by
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default. This option has no effect for \fB\-\-mtab\fP or \fB\-\-fstab\fP.
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.IP "\fB\-S, \-\-source \fIspec\fP"
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Explicitly define the mount source. Supported are \fIdevice\fR, \fImaj:min\fR,
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\fILABEL=\fR, \fIUUID=\fR, \fIPARTLABEL=\fR or \fIPARTUUID=\fR.
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.IP "\fB\-T, \-\-target \fIdir\fP"
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Explicitly define the mount target (mountpoint directory).
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.IP "\fB\-w, \-\-timeout \fImilliseconds\fP"
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Specify an upper limit on the time for which \fB--poll\fR will block, in milliseconds.
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.SH EXAMPLES
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.IP "\fBfindmnt \-\-fstab \-t nfs\fP"
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Prints all nfs filesystems defined in
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.IR /etc/fstab .
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.IP "\fBfindmnt \-\-fstab /mnt/foo\fP"
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Prints all
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.IR /etc/fstab
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filesystems where the mountpoint directory is /mnt/foo. It also prints bind mounts where /mnt/foo
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is a source.
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.IP "\fBfindmnt \-\-fstab --target /mnt/foo\fP"
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Prints all
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.IR /etc/fstab
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filesystems where the mountpoint directory is /mnt/foo.
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.IP "\fBfindmnt --fstab --evaluate\fP"
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Prints all
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.IR /etc/fstab
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filesystems and converts LABEL= and UUID= tags to the real device names.
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.IP "\fBfindmnt -n --raw --evaluate --output=target LABEL=/boot\fP"
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Prints only the mountpoint where the filesystem with label "/boot" is mounted.
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.IP "\fBfindmnt --poll --target /mnt/foo\fP"
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Monitors mount, umount, remount and move on /mnt/foo.
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.IP "\fBfindmnt --poll=umount --first-only --target /mnt/foo\fP"
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Waits for /mnt/foo umount.
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.IP "\fBfindmnt --poll=remount -t ext3 -O ro\fP"
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Monitors remounts to read-only mode on all ext3 filesystems.
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.SH ENVIRONMENT
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.IP LIBMOUNT_FSTAB=<path>
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overrides the default location of the fstab file
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.IP LIBMOUNT_MTAB=<path>
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overrides the default location of the mtab file
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.IP LIBMOUNT_DEBUG=0xffff
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enables debug output
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.SH AUTHORS
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.nf
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Karel Zak <kzak@redhat.com>
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.fi
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.SH SEE ALSO
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.BR mount (8),
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.BR fstab (5)
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.SH AVAILABILITY
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The findmnt command is part of the util-linux package and is available from
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ftp://ftp.kernel.org/pub/linux/utils/util-linux/.
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