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bup-index

NAME

bup-index - print and/or update the bup filesystem index

SYNOPSIS

bup index <-p|-m|-u> [-s] [-H] [-l] [-x] [---fake-valid] [---check] [-f indexfile] [-v] <filenames...>

DESCRIPTION

bup index prints and/or updates the bup filesystem index, which is a cache of the filenames, attributes, and sha-1 hashes of each file and directory in the filesystem. The bup index is similar in function to the git(1) index, and can be found in ~/.bup/bupindex.

Creating a backup in bup consists of two steps: updating the index with bup index, then actually backing up the files (or a subset of the files) with bup save. The separation exists for these reasons:

1.

There is more than one way to generate a list of files that need to be backed up. For example, you might want to use inotify(7) or dnotify(7).

2.

Even if you back up files to multiple destinations (for added redundancy), the file names, attributes, and hashes will be the same each time. Thus, you can save the trouble of repeatedly re-generating the list of files for each backup set.

3.

You may want to use the data tracked by bup index for other purposes (such as speeding up other programs that need the same information).

OPTIONS

-u, ---update

(recursively) update the index for the given filenames and their descendants. One or more filenames must be given.

-p, ---print

print the contents of the index. If filenames are given, shows the given entries and their descendants. If no filenames are given, shows the entries starting at the current working directory (.) .

-m, ---modified

prints only files which are marked as modified (ie. changed since the most recent backup) in the index. Implies -p.

-s, ---status

prepend a status code (A, M, D, or space) before each filename. Implies -p. The codes mean, respectively, that a file is marked in the index as added, modified, deleted, or unchanged since the last backup.

-H, ---hash

for each file printed, prepend the most recently recorded hash code. The hash code is normally generated by bup save. For objects which have not yet been backed up, the hash code will be 0000000000000000000000000000000000000000. Note that the hash code is printed even if the file is known to be modified or deleted in the index (ie. the file on the filesystem no longer matches the recorded hash). If this is a problem for you, use --status.

-l, ---long

print more information about each file, in a similar format to the -l option to ls(1). (INCOMPLETE)

-x, ---xdev, ---one-file-system

don't cross filesystem boundaries when recursing through the filesystem. Only applicable if you're using -u.

---fake-valid

mark specified filenames as up-to-date even if they aren't. This can be useful for testing, or to avoid unnecessarily backing up files that you know are boring.

---check

carefully check index file integrity before and after updating. Mostly useful for automated tests.

-f, ---indexfile=indexfile

use a different index filename instead of ~/.bup/bupindex.

-v, ---verbose

increase log output during update (can be used more than once). With one -v, print each directory as it is updated; with two -v, print each file too.

EXAMPLE

      bup index -vux /etc /var /usr

SEE ALSO

bup-save(1), bup-drecurse(1)

BUP

Part of the bup(1) suite.

AUTHORS

Avery Pennarun <apenwarr@gmail.com>.