use "ssh localhost" to access local system; support ssh to other systems

1 files changed, 12 insertions, 1 deletions

diff --git a/go.sh b/go.sh
index 7487dfa..5e9b537 100755
--- a/go.sh
+++ b/go.sh
@@ -38,6 +38,11 @@ get_age()
         echo $((now - then))
 }
 
+btrfs_receive()
+{
+        ssh -- "${1%%:*}" btrfs receive -- "${1#*:}"
+}
+
 set -e
 check_dependencies
 check_user_is_root
@@ -67,6 +72,12 @@ src=${config[source]}
 dst=${config[destination]}
 remote_head=${config[head]}
 
+case "$dst" in
+        *:/*) ;;
+        /*) dst=localhost:$dst ;;
+        *) die "Invalid destination: $dst" ;;
+esac
+
 is_subvolume "$src"
 
 if [ "$(get_age "$remote_head")" -le "$MAX_AGE_SECONDS" ]
@@ -78,7 +89,7 @@ else
         btrfs subvolume snapshot -r -- "$src" "$new_snapshot"
 fi
 
-btrfs send ${remote_head:+ -p "$remote_head"} -- "$new_snapshot" | pv | btrfs receive -- "$dst"
+btrfs send ${remote_head:+ -p "$remote_head"} -- "$new_snapshot" | pv | btrfs_receive "$dst"
 jq --arg h "$new_snapshot" '. | .head=$h' <"$config_file" >"$config_file_temp"
 mv -T -- "$config_file_temp" "$config_file"