.TH metastore "1" "January 2016" .\" .SH NAME metastore \- stores and restores filesystem metadata .\" .SH SYNOPSIS \fBmetastore\fR \fIACTION\fR [\fIOPTION...\fR] [\fIPATH...\fR] .\" .SH DESCRIPTION Stores or restores metadata (owner, group, permissions, xattrs and optionally mtime) for a filesystem tree. This can be used to preserve the metadata in situations where it is usually not stored (git and tar for example) or as a tripwire like mechanism to detect any changes to metadata. Note that e.g. SELinux stores its labels in xattrs so care should be taken when applying stored metadata to make sure that system security is not compromised. .\" .SH ACTIONS .TP .B \-c, \-\-compare Shows the difference between the stored and real metadata. .TP .B \-s, \-\-save Saves the current metadata to ./.metadata or to the specified file (see \-\-file option below). .TP .B \-a, \-\-apply Attempts to apply the stored metadata to the file system. .TP .B \-d, \-\-dump Dumps stored (if no \fIPATH\fR is given) or real metadata (if \fIPATH\fR is present, e.g. \fB./\fR) in human-readable form. This action is meant only as a helpful debugging facility or merge conflict helper. Do not ever compare its output generated using different metastore version. Do not rely on current output format (especially in batch scripts), because it may change in future without prior notice. .TP .B \-h, \-\-help Prints a help message and exits. .\" .SH OPTIONS .TP .B \-v, \-\-verbose Causes metastore to print more verbose messages. Can be repeated more than once for even more verbosity. .TP .B \-q, \-\-quiet Causes metastore to print less verbose messages. Can be repeated more than once for even less verbosity. .TP .B \-m, \-\-mtime Causes metastore to also take mtime into account for the compare or apply actions. .TP .B \-e, \-\-empty\-dirs Also attempts to recreate missing empty directories. May be useful where empty directories are not tracked (e.g. by git or cvs). Only works in combination with the \fBapply\fR option. .TP .B -E, --remove-empty-dirs Also attempts to remove empty directories missing from the metadata. May be useful where empty directories are not tracked (e.g. by git or cvs). Only works in combination with the \fBapply\fR option. .TP .B \-g, \-\-git Prevents metastore from omitting .git directories. .TP .B \-f , \-\-file Causes the metadata to be saved, read from the specified file rather than ./.metadata. .TP .B \-r , \-\-format Causes the metadata to be saved in format \fB\fR. See \fBFORMATS\fR below. .\" .SH PATHS If no path is specified, metastore will use the current directory as the basis for the actions. This is the recommended way of executing metastore. Alternatively, one or more paths can be specified and they will each be examined. Later invocations should be made using the exact same paths to ensure that the stored metadata is interpreted correctly. .\" .SH FORMATS .TP .B 0 The original and default format, it is a compact binary representation of the file metadata stored. .TP .B 1 This format is a tab-separated, line-based text representation of the file metadata stored. Is is not as compact as Format \fB0\fR, but is designed to integrate with text-based version control mechanisms, like diffs, patches, merges, and conflicts. After the signature/version header line, the format is: .EX [ ...] .EE Where .I owner and .I group are names, not ids, .I mode is the octal representation of the 16-bit "file type and mode" field described in .BR inode (7), and .I mtime is the ISO-8601 extended format representation of the last-modified time in UTC, with nanosecond precision. Strings are URL-encoded, and all characters from 0x00 to 0x20 (inclusive), 0x25 (%) and 0x7F \fBmust\fR be encoded. As mentioned above, the format is primarily designed to be compatible with version control tools. It is secondarily designed to be mostly-readable by humans like you, because humans use those tools. It is \fInot\fR specifically designed to be written by humans. In the case of merge conflicts that require intervention it is recommended that you pick one existing version of an entry, rather than trying to edit one of your own with aspects of both. (Or manually reset the file permissions, and re-generate the metainfo file.) Particularly, because bytes >= 0x80 are not URL-encoded, binary xattr data probably won't be UTF-8 clean, so you may have a hard time doing anything other than deleting unwanted lines with many editors. .\" .SH AUTHORS metastore was created by David Härdeman in 2007-2008. Now it is maintained by Przemysław Pawełczyk. All source code contributors are listed in the AUTHORS file.