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.TH HGFS 4
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.SH NAME
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hgfs \- mercurial file system
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.SH SYNOPSIS
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.B hgfs
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[
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.B -D
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]
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[
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.B -m
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.I mtpt
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]
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[
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.B -s
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.I service
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]
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[
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.I dir
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]
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.SH DESCRIPTION
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Mercurial is a distributed version control system. It tracks
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and organizes files and keeps a change history of them. The
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file revisions are stored as packed deltas in a repository
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that can be checked out with the
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.IR hg (1)
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program.
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2011-06-29 05:36:21 +00:00
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.I Hgfs
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serves a mercurial repository as a read-only filesystem where
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each file revision and its metadata is accessible as files.
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The repository may be specified by passing the working directory
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.I dir
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as the final argument. When omitted,
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.I hgfs
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locates the repository by waking
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upwards from the current working directory until the
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.B .hg
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sub-directory is found. If no
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.I mtpt
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was specified with
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.B -m
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,
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then hgfs will mount itself on
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.B /mnt/hg
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(default). When a
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.I service
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name is given with the
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.B -s
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flag, the 9p service pipe
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.B /srv/\fIservice\fR
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is created and may be mounted from another namespace.
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The
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.B -D
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flag enables 9p debug messages.
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The root of the served filesystem contains directories each
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corresponding to a specific changeset revision in the
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repository.
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Revision directories are named by a revision id which
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takes the form [\fId\fB.\fR]\fIh\fR, where
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.I d
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is the decimal revision number starting from 0 and
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.I h
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is the hexadecimal hash of the changeset. Both
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the revision number
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.I d
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and the hash
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.I h
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are able to identify
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a revision uniquely; only one of them needs to be given
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when walking the root directory. The hexadecimal hash
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2c(1), torrent(1), uhtml(1), kbd(3), cwfs(4), hgfs(4), cifsd(8), cryptsetup(8), hjfs(8), kbdfs(8), realemu(8), wpa(8): fix spelling, typos
2013-08-23 19:48:52 +00:00
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may be shortened so long as the resulting lookup yields
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a unique result. The special name
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.B tip
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corresponds to the latest revision but does not appear
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in the directory listing.
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In each revision directory the following files can be found:
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.TP
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.B rev
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contains the revision id of the changeset.
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.TP
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.B rev1
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contains the parent revision id of the changeset.
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.TP
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.B rev2
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If the changeset was a merge, contains the other parent revision id. Otherwise, a zero size file.
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.TP
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.B log
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The
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.B log
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file contains a list of file names, separated by a newline, that where
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affected in this changeset. Files that are listed in the log
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but are not accessible in the
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.B files
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or
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.B changes
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directories have been deleted in this changeset.
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.TP
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.B who
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committer of the changeset.
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.TP
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.B why
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commit message of the changeset.
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.TP
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.B files
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A directory that contains a snapshot of the tree at the time
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2c(1), torrent(1), uhtml(1), kbd(3), cwfs(4), hgfs(4), cifsd(8), cryptsetup(8), hjfs(8), kbdfs(8), realemu(8), wpa(8): fix spelling, typos
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the changeset was committed.
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To retrieve the \fIn\fRth
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past version of a file relative to the changeset,
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one can append \fB.\fIn\fR
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to the filename. Appending \fB.rev\fIn\fR yields
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a file that contains its revision id as text. Note that
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appending \fB.rev\fI0\fR or \fB.rev\fR yields the file containing the
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revision id of the changeset when the file was last modified
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and \fB.\fI0\fR yields the same file as when omitting the appendix.
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.TP
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.B changes
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Same as
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.B files,
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but contains only the changed files of the changeset.
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.SH SOURCE
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.B /sys/src/cmd/hgfs
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.SH SEE ALSO
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.IR hg (1)
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2014-12-18 21:06:25 +00:00
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.SH HISTORY
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.I Hgfs
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first appeared in 9front (June, 2011).
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