[PATCH] git-init-db(1): Describe --shared and the idempotent nature of init-db

[Jonas Fonseca <fonseca@diku.dk>]

Based on the recent discussion on the mailing list.

Signed-off-by: Jonas Fonseca <fonseca@diku.dk>

---
commit dbad4968a3d1f518e5102a241196380ba0bcce75
tree f8f0d7ed79046ec316d26b0ba84034b571416533
parent 58e3fb40f7ca1c28f9105c15166884f80bb22e55
author Jonas Fonseca <fonseca@diku.dk> Sat, 31 Dec 2005 18:06:33 +0100
committer Jonas Fonseca <fonseca@antimatter.localdomain> Sat, 31 Dec 2005 18:06:33 +0100

 Documentation/git-init-db.txt |   16 ++++++++++++++--
 1 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/Documentation/git-init-db.txt b/Documentation/git-init-db.txt
index 6deef92..9cf9499 100644
--- a/Documentation/git-init-db.txt
+++ b/Documentation/git-init-db.txt
@@ -8,7 +8,7 @@ git-init-db - Creates an empty git repos
 
 SYNOPSIS
 --------
-'git-init-db' [--template=<template_directory>]
+'git-init-db' [--template=<template_directory>] [--shared]
 
 
 OPTIONS
@@ -16,6 +16,9 @@ OPTIONS
 --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 @@ If the object storage directory is speci
 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
-- 
Jonas Fonseca