blkid: add new options to blkid.8 and help output
Signed-off-by: Karel Zak <kzak@redhat.com>
This commit is contained in:
Karel Zak
parent
5297467316
commit
02a8a21a26
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@ -56,20 +56,23 @@ static void usage(int error)
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"Usage:\n"
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" %1$s [-c <file>] [-ghlLv] [-o format] [-s <tag>] \n"
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" [-t <token>] [-w <file>] [dev ...]\n\n"
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" %1$s -p [-O <offset>] [-S <size>] <dev> [dev ...]\n\n"
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" %1$s -p [-O <offset>] [-S <size>] [-o format] <dev> [dev ...]\n\n"
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"Options:\n"
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" -c <file> cache file (default: /etc/blkid.tab, /dev/null = none)\n"
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" -h print this usage message and exit\n"
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" -g garbage collect the blkid cache\n"
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" -o <format> output format; can be one of:\n"
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" value, device, list, udev or full; (default: full)\n"
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" -p switch to low-probe mode (bypass cache)\n"
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" -s <tag> show specified tag(s) (default show all tags)\n"
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" -t <token> find device with a specific token (NAME=value pair)\n"
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" -l lookup the the first device with arguments specified by -t\n"
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" -v print version and exit\n"
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" -w <file> write cache to different file (/dev/null = no write)\n"
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" <dev> specify device(s) to probe (default: all devices)\n\n",
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" <dev> specify device(s) to probe (default: all devices)\n\n"
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"Low-level probing options:\n"
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" -p switch to low-level mode (bypass cache)\n"
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" -S <bytes> overwrite device size\n"
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" -O <bytes> probe at the given offset\n\n"
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progname);
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exit(error);
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@ -10,32 +10,33 @@
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blkid \- command\-line utility to locate/print block device attributes
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.SH SYNOPSIS
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.B blkid
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[
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.B \-ghlLv
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]
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[
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[
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.B \-c
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.I cachefile
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]
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.B \-w
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.I writecachefile
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]
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[
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.B \-o
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.I format
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]
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[
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.B \-s
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.I tag
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]
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[
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.B \-t
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.IR NAME = value
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]
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[
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.I device ...
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]
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.RB [ \-ghlLv ]
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.RB [ \-c
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.IR file ]
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.RB [ \-w
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.IR file ]
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.RB [ \-o
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.IR format ]
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.in +6
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.RB [ \-s
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.IR tag ]
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.RB [ \-t
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.IR NAME=value ]
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.I device
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[\fIdevice\fR ...]
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.in -6
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.B blkid
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.RB -p
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.RB [ \-O
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.IR offset ]
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.RB [ \-S
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.IR size ]
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.RB [ \-o
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.IR format ]
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.I device
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[\fIdevice\fR ...]
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.SH DESCRIPTION
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The
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.B blkid
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@ -79,25 +80,39 @@ block devices. If this option is not specified,
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.B blkid
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will print all of the devices that match the search parameter.
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.TP
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.B \-L
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Print the devices in a user-friendly list format. This is the
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equivalent of using the option \fB-o list\fR.
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.TP
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.BI \-o " format"
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Display
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.BR blkid 's
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output using the specified format. The
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.I format
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parameter may be
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.I full
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(the default),
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.I value
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(only print the value of the tags),
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.I list
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(print the devices in a user-friendly format),
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or
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.I device
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(only print the device name).
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parameter may be:
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.RS
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.TP
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.B \-L
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Print the devices in a user-friendly list format. This is the
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equivalent of using the option \fB-o list\fR.
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.B full
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print all tags (the default)
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.TP
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.B value
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print the value of the tags
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.TP
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.B list
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print the devices in a user-friendly format
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.TP
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.B device
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print the device name only
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.TP
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.B udev
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vol_id compatible mode; usable in udev rules
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.RE
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.TP
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.BI \-O " bytes"
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Probe at the given offset (only useful with \fB-p\fR).
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.TP
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.BI \-p
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Switch to low-level probing mode (bypass cache)"
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.TP
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.BI \-s " tag"
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For each (specified) device, show only the tags that match
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@ -110,6 +125,9 @@ In order to just refresh the cache without showing any tokens, use
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.B "-s none"
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with no other options.
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.TP
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.BI \-S " bytes"
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Ooverwrite device/file size (only useful with \fB-p\fR).
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.TP
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.BI \-t " NAME" = "value"
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Search for block devices with tokens named
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.I NAME
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@ -155,10 +173,10 @@ devices, 0 is returned. If the specified token was not found, or no
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For usage or other errors, an exit code of 4 is returned.
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.SH AUTHOR
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.B blkid
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was written by Andreas Dilger for libblkid.
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was written by Andreas Dilger for libblkid and improved by Theodore Ts'o
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and Karel Zak.
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.SH AVAILABILITY
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.B blkid
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is part the e2fsprogs package since version 1.26 and is available from
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http://e2fsprogs.sourceforge.net.
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The blkid command is part of the util-linux-ng package and is available from
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ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.
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.SH "SEE ALSO"
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.BR libblkid (3)
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