Added -n for dry run mode

2 files changed, 11 insertions, 5 deletions

diff --git a/mirror.1 b/mirror.1
index 361f256..a19da7c 100644
--- a/mirror.1
+++ b/mirror.1
@@ -3,13 +3,14 @@
 mirror \- copies remote git repositories in bulk
 .SH SYNOPSIS
 .SY mirror
+.RB [ -n ]
 .RI [ repositories ]
 .SY mirror\ -v
 .YS
 .SH DESCRIPTION
 This script will read
 .I repositories
-file for paths or addresses to git repositories, clone them in a bare mirror mode or update existing mirrors as
+file for paths or addresses to git repositories and clone them in a bare mirror mode or update existing mirrors as
 necessary. If not provided
 .I repositories
 will default to
@@ -17,6 +18,10 @@ will default to
 in the current working directory.
 .P
 With
+.B -n
+option the script will only print actions it would perform and not attempt any updates.
+.P
+With
 .B -v
 option the script will print version information to standard output and terminate immediately after.
 .SH EXIT STATUS
diff --git a/mirror.sh b/mirror.sh
index 88ed524..118d2a4 100644
--- a/mirror.sh
+++ b/mirror.sh
@@ -6,7 +6,7 @@ _version() {
 
 
 _usage() {
-	echo "Usage: $0 [-v] [repositories]"
+	echo "Usage: $0 [-vn] [repositories]"
 	exit 1
 } >&2
 
@@ -53,17 +53,18 @@ _update() {
 	local path="$(_path ${repo})"
 	test -d "${path}" || git clone -q --mirror "${repo}" "${path}" || return 1  # TODO: Check if remotes are the same?
 	if git -C "${path}" fetch -q; then
-		echo "Updated ${path}"
+		echo "Updated: ${path}"
 	else
-		echo "Failed to update ${path}" >&2
+		echo "Failed to update: ${path}" >&2
 		return 1
 	fi
 }
 
 
-while getopts :v opt; do
+while getopts :vn opt; do
 	case ${opt} in
 		v) _version;;
+		n) _update() { echo "Would update: $(_path $1)"; };;
 		?) _usage;;
 	esac
 done