vcsh - Online in the Cloud

PROGRAM:

NAME

vcsh - Version Control System for $HOME - multiple Git repositories in $HOME

SYNOPSIS

vcsh [options] command

vcsh clone [-b branch] url [repo]

vcsh delete repo

vcsh enter repo

vcsh foreach [-g] git command

vcsh help

vcsh init repo

vcsh list

vcsh list-tracked [repo]

vcsh list-untracked [-a] [-r] [repo]

vcsh pull

vcsh push

vcsh rename repo newname

vcsh run repo shell command

vcsh status [repo]

vcsh upgrade repo

vcsh version

vcsh which substring

vcsh write-gitignore repo

vcsh repo git command

vcsh repo

DESCRIPTION

vcsh allows you to have several git(1) repositories, all maintaining their working trees
in $HOME without clobbering each other. That, in turn, means you can have one repository
per config set (zsh, vim, ssh, etc), picking and choosing which configs you want to use on
which machine.

vcsh is using a technique called fake bare Git repositories, keeping $GIT_DIR in a
different directory from $GIT_WORK_TREE which is pointed to $HOME.

The use of symlinks is not needed in this setup, making for a cleaner setup.

vcsh was designed with mr(1) in mind so you might want to install it alongside vcsh. That
being said, you can easily use vcsh without mr if you prefer.

A sample configuration for vcsh and mr can be found at
https://github.com/RichiH/vcsh_mr_template and used with vcsh clone
https://github.com/RichiH/vcsh_mr_template mr.

Please note that you can always use a path instead of a name for repo. This is needed to
support mr and other scripts properly and of no concern to an interactive user.

OPTIONS

-c Source file prior to other configuration files

-d Enable debug mode

-v Enable verbose mode

COMMANDS

clone Clone an existing repository.

If you need to clone a bundle of repositories, look into the post-clone-retired
hook.

You can also use a single git repository with several branches. Use the -b option
to specify a branch at clone time, the default is master.

commit Commit in all repositories

delete Delete an existing repository.

enter Enter repository; spawn new $SHELL.

foreach
Execute git command for every vcsh repository.

-g: Execute in general context.

help Display help.

init Initialize an empty repository.

list List all local vcsh repositories.

list-tracked
List all files tracked by vcsh.

If you want to list files tracked by a specific repository, simply append the
repository´s name last.

list-tracked-by
List files tracked by a repository.

This is a legacy command; you should use list-tracked <repo> instead.

list-untracked
List all files NOT tracked by vcsh.

-a: Show all files. By default, the git ls-files --exclude-standard is called.

-r: Recursive mode. By default, the file list is shallow and stops at directory
levels where possible.

$repo: List files not tracked by this specific repository.

pull Pull from all vcsh remotes.

push Push to all vcsh remotes.

rename Rename a repository.

run Run command with $GIT_DIR and $GIT_WORK_TREE set. Allows you to run any and all
commands without any restrictions. Use with care.

Please note that there is a somewhat magic feature for run. Instead of repo it
accepts path, as well. Anything that has a slash in it will be assumed to be a
path. vcsh run will then operate on this directory instead of the one normally
generated from the repository´s name. This is needed to support mr and other
scripts properly and of no concern to an interactive user.

status Show statuses of all/one vcsh repositories.

upgrade
Upgrade repository to currently recommended settings.

version
Print version information.

which substring
Find substring in name of any tracked file.

write-gitignore
Write .gitignore.d/repo via git ls-files.

repo gitcommand
Shortcut to run vcsh on a repo. Will prepend git to command.

repo Shortcut to run vcsh enter <repo>.

ENVIRONMENT

As noted earlier, vcsh will set $GIT_DIR and $GIT_WORK_TREE to the appropriate values for
fake bare Git repositories.

CONFIG

There are several ways to turn the various knobs on vcsh. In order of ascending
precedence, they are:

· VARIABLE=foo vcsh

· </etc/vcsh/config>

· <$XDG_CONFIG_HOME/vcsh/config>

· vcsh -c <file>

Please note that those files are sourced. Any and all commands will be executed in the
context of your shell.

Interesting knobs you can turn:

$VCSH_GITATTRIBUTES
Can be none, or any other value.

none will not maintain Git attributes in a special location.

If set to any other value, repo-specific gitattributes files will be maintained.

Defaults to none.

$VCSH_GITIGNORE
Can be exact, none, or recursive.

exact will seed the repo-specific ignore file with all file and directory names
which git ls-files returns.

none will not write any ignore file.

recursive will descend through all directories recursively additionally to the
above.

Defaults to exact.

$VCSH_VCSH_WORKTREE
Can be absolute, or relative.

absolute will set an absolute path; defaulting to $HOME.

relative will set a path relative to $GIT_DIR.

Defaults to absolute.

Less interesting knobs you could turn:

$VCSH_DEBUG
Enter debug mode.

$XDG_CONFIG_HOME
As specified in the ´XDG Base Directory Specification´, see
http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html

Defaults to <$HOME/.config>.

$VCSH_REPO_D
The directory where repositories are read from and stored.

Defaults to <$XDG_CONFIG_HOME/vcsh/repo.d>.

$VCSH_HOOK_D
The directory where hooks are read from.

Defaults to <$XDG_CONFIG_HOME/vcsh/hooks-enabled>.

$VCSH_BASE
The directory where repositories are checked out to.

Defaults to $HOME.

HOOK SYSTEM

vcsh provides a hook system. Hook scripts must be executable and should be placed in
<$XDG_CONFIG_HOME/vcsh/hooks-available>. From there, they can be soft-linked into
<$XDG_CONFIG_HOME/vcsh/hooks-enabled>; vcsh will only execute hooks that are in this
directory.

Hooks follow a simple format. pre-run will be run before anything is run. If you want to
have more than one script for a certain hook, just append any kind of string to order
them. A system of pre-run, <pre-run.10>, <pre-run.20> etc is suggested; other options
would be pre-run-10 or <pre-run.sh>. A dot after the hook name is optional.

If you want to create hooks for a specific vcsh repository, simply prepend the
repository´s name, followed by a dot, i.e. <zsh.pre-run>. Otherwise, the same rules as
above apply. The dot between the repository´s name and the hook is mandatory, though.

Available hooks are pre-clone, post-clone, post-clone-retired, pre-command, post-command,
pre-enter, post-enter, pre-init, post-init, pre-pull, post-pull, pre-push, post-push,
pre-run, post-run, pre-upgrade, and post-upgrade. If you need more, vcsh is trivial to
patch, but please let upstream know so we can ship them by default.

OVERLAY SYSTEM

vcsh also provides an overlay system. Similar to hooks, the recommended locations are
<$XDG_CONFIG_HOME/vcsh/overlays-available> and <$XDG_CONFIG_HOME/vcsh/overlays-enabled>.

Overlays follow the same rules as hooks and you are free to overwrite any and all
functions. Same as hooks, you can use global or repository-specific overlays by using
either <$VCSH_OVERLAY_D/$VCSH_COMMAND> or <$VCSH_OVERLAY_D/$VCSH_REPO_NAME.$VCSH_COMMAND>.

Please note that nothing stops you from, e.g. overwriting status() in
<$VCSH_OVERLAY_D/commit>. As the overlays will be sourced and you are replacing arbitrary
functions, any and all features may stop working, or you may even lose data.

You have been warned.

DETAILED HOWTO AND FURTHER READING

Manpages are often short and sometimes useless to glean best practices from. While the
author tried to avoid this in this case, manpages can not cover detailed howtos.

This software also comes with a file called <README.md>. It contains various approaches to
setting up and using vcsh. You can view the file it as plain text or render it into
various other formats via Markdown.

On Debian-based systems, this file can be found in </usr/share/doc/vcsh>.

SECURITY CONSIDERATIONS

vcsh allows you to execute arbitrary commands via vcsh run. For example, adding a sudo(8)
rule for vcsh would be pretty stupid.

Additionally, vcsh will source, i.e. execute, all files listed in CONFIG. You can put any
and all commands into these config files and they will be executed.

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