Remove bash-isms from set-main

Signed-off-by: William Brawner <me@wbrawner.com>

delete

@@ -7,11 +7,11 @@ if [[ -z "$1" ]]; then
 	exit 1
 fi
 
-if [[ ! -d "$1.git" ]]; then
+if [[ ! -d "$1" ]]; then
 	echo "Repo $1 doesn't exist"
 	exit 1
 fi
 
-rm -rf "$1.git"
+rm -rf "$1"
 echo "Successfully deleted repository $1"
 

edit-description

@@ -7,10 +7,10 @@ if [[ -z "$1" ]]; then
 	exit 1
 fi
 
-if [[ ! -d "$1.git" ]]; then
+if [[ ! -d "$1" ]]; then
 	echo "Repo $1 doesn't exist"
 	exit 1
 fi
 
-vim "$1.git/description"
+vim "$1/description"
 

help

@@ -11,5 +11,6 @@ Welcome to the Brawner home private git server. The available commands are liste
   new [REPOSITORY_NAME] 			     - create a new repository
   notify-jenkins [REPOSITORY_NAME]                   - configure a repository to notify Jenkins of new commits
   rename [OLD_REPOSITORY_NAME] [NEW_REPOSITORY_NAME] - rename a repository
+  set-main [REPOSITORY_NAME]                         - rename a repository's master branch to main
 
 EOF

new

@@ -7,12 +7,12 @@ if [[ -z "$1" ]]; then
 	exit 1
 fi
 
-if [[ -d "$1.git" ]]; then
+if [[ -d "$1" ]]; then
 	echo "Repo $1 already exists"
 	exit 1
 fi
 
-/usr/bin/git init --bare "$1.git"
-/usr/bin/git -C "$1.git" config http.receivepack true
+/usr/bin/git init --bare "$1"
+/usr/bin/git -C "$1" config http.receivepack true
 echo "Successfully created repository $1"
 

rename

@@ -10,11 +10,11 @@ if [[ -z "$2" ]]; then
 	exit 1
 fi
 
-if [[ -d "$2.git" ]]; then
+if [[ -d "$2" ]]; then
 	echo "Repo $2 already exists"
 	exit 1
 fi
 
-mv "$1.git" "$2.git"
+mv "$1" "$2"
 echo "Successfully renamed repository $1 to $2"
 

set-main

@@ -0,0 +1,19 @@
+#!/usr/bin/env sh
+
+source "$(dirname "$0")/pre-script"
+
+if [[ -z "$1" ]]; then
+	echo "Please enter a repository name"
+	exit 1
+fi
+
+if [[ ! -d "$1" ]]; then
+	echo "Repo $1 doesn't exist"
+	exit 1
+fi
+
+RET="$(pwd)"
+cd $1
+git symbolic-ref HEAD refs/heads/main
+cd "$RET"
+