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Complete the manpage, and sync the help in program

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Tim Byrne 8 years ago
parent 2655b39e5b
commit a403128b88
2 changed files with 443 additions and 60 deletions
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  1. 72
      yadm
  2. 431
      yadm.1

72
yadm
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@ -28,7 +28,7 @@ YADM_ARCHIVE="$YADM_DIR/files.gpg"
#; flag when something may have changes (which prompts auto actions to be performed)
CHANGES_POSSIBLE=0
#; use the YADM repo for all git operations
#; use the yadm repo for all git operations
export GIT_DIR="$YADM_REPO"
function main() {
@ -56,16 +56,16 @@ function main() {
while [[ $# > 0 ]] ; do
key="$1"
case $key in
-a|--all) #; used by list()
-a) #; used by list()
LIST_ALL="YES"
;;
-d|--debug) #; used by all commands
-d) #; used by all commands
DEBUG="YES"
;;
-f|--force) #; used by init() and clone()
-f) #; used by init() and clone()
FORCE="YES"
;;
-w|--work-tree) #; used by init() and clone()
-w) #; used by init() and clone()
if [[ ! "$2" =~ ^/ ]] ; then
error_out "You must specify a fully qualified work tree"
fi
@ -95,7 +95,7 @@ function main() {
}
#; ****** YADM Commands ******
#; ****** yadm Commands ******
function alt() {
@ -103,7 +103,7 @@ function alt() {
#; regex for matching "<file>##SYSTEM.HOSTNAME"
match_system=$(uname -s)
match_host=$(hostname)
match_host=$(hostname -s)
match="^(.+)##($match_system|$match_system.$match_host)$"
#; process relative to YADM_WORK
@ -111,7 +111,7 @@ function alt() {
cd $YADM_WORK
#; only be noisy if the "alt" command was run directly
[ "$YADM_COMMAND" == "alt" ] && LOUD="YES"
[ "$YADM_COMMAND" == "alt" ] && loud="YES"
#; loop over all "tracked" files
#; for every file which matches the above regex, create a symlink
@ -121,7 +121,7 @@ function alt() {
if [[ $tracked_file =~ $match ]] ; then
new_link="${BASH_REMATCH[1]}"
debug "Linking $tracked_file to $new_link"
[ -n "$LOUD" ] && echo "Linking $tracked_file to $new_link"
[ -n "$loud" ] && echo "Linking $tracked_file to $new_link"
ln -fs "$tracked_file" "$new_link"
fi
fi
@ -144,8 +144,8 @@ function clone() {
debug "Adding remote to new repo"
git remote add origin "$1"
debug "Configuring new repo to track origin/master"
git config branch.master.remote origin
git config branch.master.merge refs/heads/master
git config branch.master.remote origin
git config branch.master.merge refs/heads/master
#; fetch / merge (and possibly fallback to reset)
debug "Doing an initial fetch of the origin"
@ -157,7 +157,7 @@ function clone() {
cat <<EOF
**NOTE**
Merging origin/master failed.
YADM did 'reset origin/master' instead.
yadm did 'reset origin/master' instead.
This likely happened because you had files in your
work-tree, which conflict files tracked by origin/master
@ -177,11 +177,11 @@ function config() {
#; ensure we have a file, even if empty
[ -f "$YADM_CONFIG" ] || touch "$YADM_CONFIG"
if [ -z "$@" ] ; then
if [ -z "$*" ] ; then
#; with no parameters, provide some helpful documentation
echo TODO: Print help about available YADM configurations
echo TODO: Print help about available yadm configurations
else
#; operate on the YADM configuration file
#; operate on the yadm configuration file
git config --file="$YADM_CONFIG" $@
fi
@ -249,28 +249,28 @@ function git_command() {
function help() {
cat << EOF
Usage: yadm [COMMAND] [OPTIONS ...]
Usage: yadm <command> [options...]
Manage dotfiles maintained in a Git repository. Manage alternate files
for specific systems or hosts. Encrypt/decrypt private files.
Git Commands:
Any Git command or alias can be used as a [COMMAND]. It will operate
on YADM's repository and files in the work tree (usually \$HOME).
Any Git command or alias can be used as a <command>. It will operate
on yadm's repository and files in the work tree (usually \$HOME).
Commands:
init [-f] - Initialize an empty repository
clone [-f] GIT_URL - Clone an existing repository
config [name] [value] - Configure a setting
list [-a] - List tracked files
alt - Create links for alternates
encrypt - Encrypt files
decrypt - Decrypt files
perms - Fix perms for private files
Paths:
\$HOME/.yadm/config - YADM's configuration file
\$HOME/.yadm/repo.git - YADM's Git repository
yadm init [-f] - Initialize an empty repository
yadm clone <url> [-f] - Clone an existing repository
yadm config <name> <value> - Configure a setting
yadm list [-a] - List tracked files
yadm alt - Create links for alternates
yadm encrypt - Encrypt files
yadm decrypt - Decrypt files
yadm perms - Fix perms for private files
Files:
\$HOME/.yadm/config - yadm's configuration file
\$HOME/.yadm/repo.git - yadm's Git repository
\$HOME/.yadm/encrypt - List of globs used for encrypt/decrypt
Use "man yadm" for complete documentation.
@ -330,7 +330,7 @@ function perms() {
[ -f "$YADM_ARCHIVE" ] && GLOBS=("${GLOBS[@]}" "$YADM_ARCHIVE")
#; include all .ssh files (unless disabled)
if [[ $(config yadm.ssh-perms) != "false" ]] ; then
if [[ $(config --bool yadm.ssh-perms) != "false" ]] ; then
GLOBS=("${GLOBS[@]}" $(eval /bin/ls ".ssh/*" 2>/dev/null))
fi
@ -365,10 +365,10 @@ function configure_repo() {
#; change bare to false (there is a working directory)
git config core.bare 'false'
#; set the worktree for the YADM repo
#; set the worktree for the yadm repo
git config core.worktree "$YADM_WORK"
#; possibly used later to ensure we're working on the YADM repo
#; possibly used later to ensure we're working on the yadm repo
git config yadm.managed 'true'
}
@ -381,7 +381,7 @@ function debug() {
function error_out() {
echo -e "ERROR: $@"
echo -e "ERROR: $@"
exit 1
}
@ -392,7 +392,7 @@ function auto_alt() {
#; process alternates if there are possible changes
if [ "$CHANGES_POSSIBLE" == "1" ] ; then
auto_alt=$(config yadm.auto-alt)
auto_alt=$(config --bool yadm.auto-alt)
if [ "$auto_alt" != "false" ] ; then
alt
fi
@ -404,7 +404,7 @@ function auto_perms() {
#; process permissions if there are possible changes
if [ "$CHANGES_POSSIBLE" == "1" ] ; then
auto_perms=$(config yadm.auto-perms)
auto_perms=$(config --bool yadm.auto-perms)
if [ "$auto_perms" != "false" ] ; then
perms
fi

431
yadm.1
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@ -1,32 +1,415 @@
." vim: set spell so=8:
.TH yadm 1 "14 July 2015" "1.00"
.SH NAME
yadm \- Yet Another Dotfiles Manager
.SH SYNOPSIS
Manage dotfiles maintained in a Git repository. Manage alternate files for
specific systems or hosts. Encrypt/decrypt private files.
Git Commands:
Any Git command or alias can be used as a [COMMAND]. It will operate on YADM's
repository and files in the work tree (usually $HOME).
Commands:
init [-f] - Initialize an empty repository
clone [-f] <URL> - Clone an existing repository
config [name] [value] - Configure a setting
list [-a] - List tracked files
alt - Create links for alternates
encrypt - Encrypt files
decrypt - Decrypt files
perms - Fix perms for private files
Paths:
$HOME/.yadm/config - YADM's configuration file
$HOME/.yadm/repo.git - YADM's Git repository
$HOME/.yadm/encrypt - List of globs used for encrypt/decrypt
.B yadm
.I command
.RI [ options ]
.B yadm
.I git-command-or-alias
.RI [ options ]
.B yadm
init
.RB [ -f ]
.B yadm
.RI clone " url
.RB [ -f ]
.RB [ -w
.IR directory ]
.B yadm
.RI config " name
.RI [ value ]
.B yadm
config
.RB [ -e ]
.B yadm
list
.RB [ -a ]
.BR yadm " encrypt
.BR yadm " decrypt
.BR yadm " alt
.BR yadm " perms
.SH DESCRIPTION
.SH OPTIONS
.SH SEE ALSO
.B yadm
is a tool for managing a collection of files across multiple computers,
using a shared Git repository.
In addition,
.B yadm
provides a feature to select alternate versions of files
based on the operation system or host name.
Lastly,
.B yadm
supplies the ability to manage a subset of secure files, which are
encrypted before they are included in the repository.
.SH COMMANDS
.TP
.IR git-command " or " git-alias
Any command not internally handled by
.B yadm
is passed through to
.BR git (1).
Git commands or aliases are invoked with the
.B yadm
managed repository.
The working directory for git commands will be the configured
.IR work-tree " (usually
.IR $HOME ).
Dotfiles are managed by using standard
.B git
commands;
.IR add ,
.IR commit ,
.IR push ,
.IR pull ,
etc.
.RI The " config
command is not passed directly through.
Instead use the
.I gitconfig
command (see below).
.TP
.B alt
Create symbolic links for any managed files matching the naming rules describe in the ALTERNATES section.
It is usually unnecessary to run this command, as
.B yadm
automatically processes alternates by default.
This automatic behavior can be disabled by setting the configuration
.I yadm.auto-alt
to "false".
.TP
.BI clone " url
Clone a remote repository for tracking dotfiles.
After the contents of the remote repository have been fetched, a "merge" of
.I origin/master
is attempted.
If there are conflicting files already present in the
.IR work-tree ,
this merge will fail and instead a "reset" of
.I origin/master
will be done.
It is up to the user to resolve these conflicts,
but if the desired action is to have the contents in the repository overwrite the existing files,
then a "hard reset" should accomplish that:
.RS
.RS
yadm reset --hard origin/master
.RE
.RE
.IP
The repository is stored in
.IR $HOME/.yadm/repo.git .
By default,
.I $HOME
will be used as the
.IR work-tree ,
but this can be overridden with the
.BR -w " option.
.B yadm
can be forced to overwrite an existing repository by providing the
.BR -f " option.
.TP
.B config
This command manages configurations for
.BR yadm .
This command works exactly they way
.BR git-config (1)
does.
See the CONFIGURATION section for more details.
.TP
.B decrypt
Decrypt all files stored in
.IR $HOME/.yadm/files.gpg .
Files decrypted will be relative to the configured
.IR work-tree " (usually
.IR $HOME ).
.TP
.B encrypt
Encrypt all files matching the patterns found in
.IR $HOME/.yadm/encrypt .
See the ENCRYPTION section for more details.
.TP
.B gitconfig
Pass options to the
.B git config
command. Since
.B yadm
already uses the
.I config
command to manage its own configurations,
this command is provided as a way to change configurations of the repository managed by
.BR yadm .
One particularly useful case may be to configure the repository so untracked files are hidden from status commands:
.RS
.RS
yadm gitconfig status.showUntrackedFiles no
.RE
.RE
.TP
.B help
Print a summary of
.BR yadm " commands.
.TP
.B init
Initialize a new, empty repository for tracking dotfiles.
The repository is stored in
.IR $HOME/.yadm/repo.git .
By default,
.I $HOME
will be used as the
.IR work-tree ,
but this can be overridden with the
.BR -w " option.
.B yadm
can be forced to overwrite an existing repository by providing the
.BR -f " option.
.TP
.B list
Print a list of files managed by
.BR yadm .
.RB The " -a
option will cause all managed files to be listed.
Otherwise, the list will only include files from the current directory or below.
.TP
.B perms
Update permissions as described in the PERMISSIONS section.
It is usually unnecessary to run this command, as
.B yadm
automatically processes permissions by default.
This automatic behavior can be disabled by setting the configuration
.I yadm.auto-perms
to "false".
.TP
.B version
Print the version of
.BR yadm .
.SH CONFIGURATION
.B yadm
uses a configuration file named
.IR $HOME/.yadm/config .
This file uses the same format as
.BR git-config (1).
Also, you can control the contents of the configuration file
via the
.B yadm config
command (which works exactly like
.BR git-config ).
For example, to disable alternates you can run the command:
.RS
yadm config yadm.auto-alt false
.RE
The following is the full list of supported configurations:
.TP
.B yadm.auto-alt
Disable the automatic linking described in the section ALTERNATES.
If disabled, you may still run
.B yadm alt
manually to create the alternate links.
This feature is enabled by default.
.TP
.B yadm.auto-perms
Disable the automatic permission changes described in the section PERMISSIONS.
If disabled, you may still run
.B yadm perms
manually to update permissions.
This feature is enabled by default.
.TP
.B yadm.ssh-perms
Disable the permission changes to
.IR $HOME/.ssh/* .
This feature is enabled by default.
.SH ALTERNATES
When managing a set of files across different systems, it can be useful to have
an automated way of choosing an alternate version of a file for a different
operation system or simply for a different host.
.B yadm
implements a feature which will automatically create a symbolic link to
the appropriate version of a file, as long as you follow a specific naming
convention.
.B yadm
can detect files with names ending with:
.RS
.BR ##SYSTEM " or " ##SYSTEM.HOSTNAME
.RE
If there are any files managed by
.BR yadm \'s
repository which match this naming convention,
symbolic links will be created for the most appropriate version.
This may best be demonstrated by example. Assume the following files are managed by
.BR yadm \'s
repository:
- $HOME/path/example.txt##Darwin
- $HOME/path/example.txt##Darwin.host1
- $HOME/path/example.txt##Darwin.host2
- $HOME/path/example.txt##Linux
- $HOME/path/example.txt##Linux.host1
- $HOME/path/example.txt##Linux.host2
If running on a Macbook named "host2",
.B yadm
will create a symbolic link which looks like this:
.IR $HOME/path/example.txt " -> " $HOME/path/example.txt##Darwin.host2
However, on another Mackbook named "host3",
.B yadm
will create a symbolic link which looks like this:
.IR $HOME/path/example.txt " -> " $HOME/path/example.txt##Darwin
Since the hostname doesn't match any of the managed files, the more generic version is chosen.
If running on a Linux server named "host4" the link will be:
.IR $HOME/path/example.txt " -> " $HOME/path/example.txt##Linux
If running on a Solaris server, no link will be created because there are no
files managed for that SYSTEM.
SYSTEM is determined by running
.B uname\ -s
HOSTNAME by running
.BR hostname\ -s .
.B yadm
will automatically create these links by default. This can be disabled using the
.I yadm.auto-alt
configuration.
Even if disabled, links can be manually created by running
.BR yadm\ alt .
.SH ENCRYPTION
It can be useful to manage confidential files, like SSH keys, across multiple
systems. However, doing so would put plain text data into a Git repository,
which often resides on a public system.
.B yadm
implements a feature which can make it easy to encrypt and decrypt a set of
files so the encrypted version can be maintained in the Git repository.
This feature will only work if the
.BR gpg (1)
command is available.
To use this feature, a list of patterns must be created and saved as
.IR $HOME/.yadm/encrypt .
This list of patterns should be relative to the configured
.IR work-tree " (usually
.IR $HOME ).
For example:
.RS
.BR \ .ssh/*.key
.RE
The
.B yadm encrypt
command will find all files matching the patterns, and prompt for a password. Once a
password has confirmed, the matching files will be encrypted and saved as
.IR $HOME/.yadm/files.gpg .
The patterns and files.gpg should be added to the
.B yadm
repository so they are available across multiple systems.
To decrypt these files later, or on another system run
.BR yadm\ decrypt
and provide the correct password.
After files are decrypted, permissions are automatically updated as described
in the PERMISSIONS section.
.SH PERMISSIONS
When files are checked out of a Git repository, their initial permissions are
dependent upon the user's umask. This can result in confidential files with lax permissions.
To prevent this,
.B yadm
will automatically update the permissions of confidential files.
The "group" and "others" permissions will be removed from the following files:
.RI - " $HOME/.yadm/files.gpg
- All files matching patterns in
.I $HOME/.yadm/encrypt
- The SSH directory and files,
.I .ssh/*
.B yadm
will automatically update permissions by default. This can be disabled using the
.I yadm.auto-perms
configuration.
Even if disabled, permissions can be manually updated by running
.BR yadm\ perms .
The SSH directory processing can be disabled using the
.I yadm.ssh-perms
configuration.
.SH FILES
.TP
.I $HOME/.yadm/config
Configuration file for
.BR yadm .
.TP
.I $HOME/.yadm/repo.git
Git repository used by
.BR yadm .
.TP
.I $HOME/.yadm/encrypt
List of globs used for encrypt/decrypt
.TP
.I $HOME/.yadm/files.gpg
All files encrypted with
.B yadm encrypt
are stored in this file.
.SH EXAMPLES
.TP
.B yadm init
Create an empty repo for managing files
.TP
.B yadm add .bash_profile ; yadm commit
Add
.I .bash_profile
to the Git index and create a new commit
.TP
.B yadm remote add origin <url>
Add a remote origin to an existing repository
.TP
.B yadm push -u origin master
Initial push of master to origin
.TP
.B echo ".ssh/*.key" >> $HOME/.yadm/encrypt
Add a new pattern to the list of encrypted files
.TP
.B yadm encrypt ; yadm add ~/.yadm/files.gpg ; yadm commit
Commit a new set of encrypted files
.SH REPORTING BUGS
Report issues or create pull requests at GitHub:
https://github.com/TheLocehiliosan/yadm
.SH AUTHOR
Tim Byrne (sultan@locehilios.com)
Tim Byrne <sultan@locehilios.com>
.SH SEE ALSO
.BR git (1),
.BR gpg (1)
Other management tools which inspired the creation of
.BR yadm :
.BR homeshick " <https://github.com/andsens/homeshick>
.BR vcsh " <https://github.com/RichiH/vcsh>

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