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bup-meta - create or extract a metadata archive
- bup meta --create
- [-R] [-v] [-q] [--no-symlinks] [--no-paths] [-f file]
<paths...>
- bup meta --list
- [-v] [-q] [-f file]
- bup meta --extract
- [-v] [-q] [--numeric-ids] [--no-symlinks] [-f file]
- bup meta --start-extract
- [-v] [-q] [--numeric-ids] [--no-symlinks] [-f file]
- bup meta --finish-extract
- [-v] [-q] [--numeric-ids] [-f file]
- bup meta --edit
- [--set-uid uid | --set-gid gid | --set-user user |
--set-group group | ...] <paths...>
bup meta creates, extracts, or otherwise manipulates metadata archives. A
metadata archive contains the metadata information (timestamps, ownership,
access permissions, etc.) for a set of filesystem paths.
See bup-restore(1) for a description of the way ownership metadata
is restored.
- -c, --create
- Create a metadata archive for the specified paths. Write the
archive to standard output unless --file is specified.
- -t, --list
- Display information about the metadata in an archive. Read the archive
from standard input unless --file is specified.
- -x, --extract
- Extract a metadata archive. Conceptually, perform --start-extract followed
by --finish-extract. Read the archive from standard input unless --file is
specified.
- --start-extract
- Build a filesystem tree matching the paths stored in a metadata archive.
By itself, this command does not produce a full restoration of the
metadata. For a full restoration, this command must be followed by a call
to --finish-extract. Once this command has finished, all of the normal
files described by the metadata will exist and be empty. Restoring the
data in those files, and then calling --finish-extract should restore the
original tree. The archive will be read from standard input unless --file
is specified.
- --finish-extract
- Finish applying the metadata stored in an archive to the filesystem.
Normally, this command should follow a call to --start-extract. The
archive will be read from standard input unless --file is specified.
- --edit
- Edit metadata archives. The result will be written to standard output
unless --file is specified.
- -f, --file=filename
- Read the metadata archive from filename or write it to
filename as appropriate. If filename is “-”,
then read from standard input or write to standard output.
- -R, --recurse
- Recursively descend into subdirectories during --create.
- --xdev, --one-file-system
- don’t cross filesystem boundaries – though as with tar and
rsync, the mount points themselves will still be handled.
- --numeric-ids
- Apply numeric IDs (user, group, etc.) rather than names during --extract
or --finish-extract.
- --symlinks
- Record symbolic link targets when creating an archive, or restore symbolic
links when extracting an archive (during --extract or --start-extract).
This option is enabled by default. Specify --no-symlinks to disable
it.
- --paths
- Record pathnames when creating an archive. This option is enabled by
default. Specify --no-paths to disable it.
- --set-uid=uid
- Set the metadata uid to the integer uid during --edit.
- --set-gid=gid
- Set the metadata gid to the integer gid during --edit.
- --set-user=user
- Set the metadata user to user during --edit.
- --unset-user
- Remove the metadata user during --edit.
- --set-group=group
- Set the metadata user to group during --edit.
- --unset-group
- Remove the metadata group during --edit.
- -v, --verbose
- Be more verbose (can be used more than once).
- -q, --quiet
- Be quiet.
-
# Create a metadata archive for /etc.
$ bup meta -cRf etc.meta /etc
bup: removing leading "/" from "/etc"
# Extract the etc.meta archive (files will be empty).
$ mkdir tmp && cd tmp
$ bup meta -xf ../etc.meta
$ ls
etc
# Restore /etc completely.
$ mkdir tmp && cd tmp
$ bup meta --start-extract -f ../etc.meta
...fill in all regular file contents using some other tool...
$ bup meta --finish-extract -f ../etc.meta
# Change user/uid to root.
$ bup meta --edit --set-uid 0 --set-user root \
src.meta > dest.meta
Hard links are not handled yet.
Part of the bup(1) suite.
Rob Browning <rlb@defaultvalue.org>.
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