git-init-db(1): Describe --shared and the idempotent nature of init-db
Based on the recent discussion on the mailing list.
Signed-off-by: Jonas Fonseca <fonseca@diku.dk>
Signed-off-by: Junio C Hamano <junkio@cox.net>
diff --git a/Documentation/git-init-db.txt b/Documentation/git-init-db.txt
index 6deef92..ea4d849 100644
--- a/Documentation/git-init-db.txt
+++ b/Documentation/git-init-db.txt
@@ -8,7 +8,7 @@
SYNOPSIS
--------
-'git-init-db' [--template=<template_directory>]
+'git-init-db' [--template=<template_directory>] [--shared]
OPTIONS
@@ -16,6 +16,9 @@
--template=<template_directory>::
Provide the directory in from which templates will be used.
+--shared::
+ Specify that the git repository is to be shared amongst several users.
+
DESCRIPTION
-----------
@@ -30,7 +33,16 @@
environment variable then the sha1 directories are created underneath -
otherwise the default `$GIT_DIR/objects` directory is used.
-`git-init-db` won't hurt an existing repository.
+A shared repository allows users belonging to the same group to push into that
+repository. When specifying `--shared` the config variable "core.sharedRepository"
+is set to 'true' so that directories under `$GIT_DIR` are made group writable
+(and g+sx, since the git group may be not the primary group of all users).
+
+
+Running `git-init-db` in an existing repository is safe. It will not overwrite
+things that are already there. The primary reason for rerunning `git-init-db`
+is to pick up newly added templates.
+
EXAMPLES
