git init [-q | --quiet] [--bare] [--template=<template_directory>]
                 [--separate-git-dir <git dir>]
                 [--shared[=<permissions>]] [directory]

       This command creates an empty Git repository - basically a .git
       directory with subdirectories for objects, refs/heads, refs/tags, and
       template files. An initial HEAD file that references the HEAD of the
       master branch is also created.

       If the $GIT_DIR environment variable is set then it specifies a path to
       use instead of ./.git for the base of the repository.

       If the object storage directory is specified via the
       $GIT_OBJECT_DIRECTORY environment variable then the sha1 directories
       are created underneath - otherwise the default $GIT_DIR/objects
       directory is used.

       Running git init in an existing repository is safe. It will not
       overwrite things that are already there. The primary reason for
       rerunning git init is to pick up newly added templates (or to move the
       repository to another place if --separate-git-dir is given).

       -q, --quiet
           Only print error and warning messages; all other output will be

           Create a bare repository. If GIT_DIR environment is not set, it is
           set to the current working directory.

           Specify the directory from which templates will be used. (See the
           "TEMPLATE DIRECTORY" section below.)

       --separate-git-dir=<git dir>
           Instead of initializing the repository as a directory to either
           $GIT_DIR or ./.git/, create a text file there containing the path
           to the actual repository. This file acts as filesystem-agnostic Git
           symbolic link to the repository.

           If this is reinitialization, the repository will be moved to the
           specified path.

           Specify that the Git repository is to be shared amongst several
           users. This allows users belonging to the same group to push into
           that repository. When specified, the config variable
           "core.sharedRepository" is set so that files and directories under
           $GIT_DIR are created with the requested permissions. When not
           specified, Git will use permissions reported by umask(2).

               (e.g. if umask is 0022, using group will not remove read
               privileges from other (non-group) users). See 0xxx for how to
               exactly specify the repository permissions.

           all (or world or everybody)
               Same as group, but make the repository readable by all users.

               0xxx is an octal number and each file will have mode 0xxx.
               0xxx will override users' umask(2) value (and not only loosen
               permissions as group and all does).  0640 will create a
               repository which is group-readable, but not group-writable or
               accessible to others.  0660 will create a repo that is readable
               and writable to the current user and group, but inaccessible to

       By default, the configuration flag receive.denyNonFastForwards is
       enabled in shared repositories, so that you cannot force a non
       fast-forwarding push into it.

       If you provide a directory, the command is run inside it. If this
       directory does not exist, it will be created.

       The template directory contains files and directories that will be
       copied to the $GIT_DIR after it is created.

       The template directory will be one of the following (in order):

       o   the argument given with the --template option;

       o   the contents of the $GIT_TEMPLATE_DIR environment variable;

       o   the init.templateDir configuration variable; or

       o   the default template directory: /usr/share/git-core/templates.

       The default template directory includes some directory structure,
       suggested "exclude patterns" (see gitignore(5)), and sample hook files
       (see githooks(5)).

       Start a new Git repository for an existing code base

               $ cd /path/to/my/codebase
               $ git init      (1)
               $ git add .     (2)
               $ git commit    (3)

           1. Create a /path/to/my/codebase/.git directory.
           2. Add all existing files to the index.
           3. Record the pristine state as the first commit in the history.

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