diff --git a/check b/check
index 6369a3e..3a5f1e1 100755
--- a/check
+++ b/check
@@ -4,50 +4,4 @@ set -e
 
 . ./common
 
-fetch_file_infos() {
-    files_file="$(mktemp -tp /tmp)"
-ssh -F "$CONFIG_PATH" "$HOSTNAME" sh -s << EOF > "$files_file"
-    files="$(get_files)"
-    echo "\$files" | while read -r file; do
-        echo "\$file"
-        [ -e "\$file" ] && echo true || echo false
-        [ -e "\$file" ] && echo "\$(stat --format=%Y "\$file")" || echo
-    done
-EOF
-    echo "$files_file"
-    return 0
-}
-
-_compute_version() {
-    echo "["
-    last_line=
-    line_file=
-    line_exists=
-    line_modify=
-    while read -r line; do
-        if [ -z "$line_file" ]; then
-            line_file="$line"
-        elif [ -z "$line_exists" ]; then
-            line_exists="$line"
-        elif [ -z "$line_modify" ]; then
-            line_modify="$line"
-        else
-            if "$line_exists"; then
-                echo '{"path":' "\"$line_file\"," '"modify":' "$line_modify" '}',
-            fi
-            line_file="$line"
-            line_exists=
-            line_modify=
-        fi
-    done < "$1"
-    if [ -n "$line_file" ] && [ -n "$line_exists" ] && [ -n "$line_modify" ] && "$line_exists"; then
-        echo '{"path":' "\"$line_file\"," '"modify":' "$line_modify" '}'
-    fi
-    echo "]"
-}
-
-compute_version() {
-    _compute_version "$@" | jq -r tostring
-}
-
-compute_version "$(fetch_file_infos)"
+compute_version "$(fetch_file_infos get_files)"
diff --git a/common b/common
index 0894a77..b42b81a 100755
--- a/common
+++ b/common
@@ -59,3 +59,61 @@ get_version() {
 get_files() {
     jq -r '.source.files?[]' < "$INPUT_PATH"
 }
+
+get_command() {
+    jq -r '.params.command?' < "$INPUT_PATH"
+}
+
+get_directory() {
+    jq -r '.params.directory // "/"' < "$INPUT_PATH"
+}
+
+get_workdir() {
+    jq -r '.params.workdir // "$HOME"' < "$INPUT_PATH"
+}
+
+fetch_file_infos() {
+    files_file="$(mktemp -tp /tmp)"
+ssh -F "$CONFIG_PATH" "$HOSTNAME" sh -s << EOF > "$files_file"
+    files="$("$1")"
+    echo "\$files" | while read -r file; do
+        echo "\$file"
+        [ -e "\$file" ] && echo true || echo false
+        [ -e "\$file" ] && echo "\$(stat --format=%Y "\$file")" || echo
+    done
+EOF
+    echo "$files_file"
+    return 0
+}
+
+_compute_version() {
+    echo "["
+    last_line=
+    line_file=
+    line_exists=
+    line_modify=
+    while read -r line; do
+        if [ -z "$line_file" ]; then
+            line_file="$line"
+        elif [ -z "$line_exists" ]; then
+            line_exists="$line"
+        elif [ -z "$line_modify" ]; then
+            line_modify="$line"
+        else
+            if "$line_exists"; then
+                echo '{"path":' "\"$line_file\"," '"modify":' "$line_modify" '}',
+            fi
+            line_file="$line"
+            line_exists=
+            line_modify=
+        fi
+    done < "$1"
+    if [ -n "$line_file" ] && [ -n "$line_exists" ] && [ -n "$line_modify" ] && "$line_exists"; then
+        echo '{"path":' "\"$line_file\"," '"modify":' "$line_modify" '}'
+    fi
+    echo "]"
+}
+
+compute_version() {
+    _compute_version "$@" | jq -r tostring
+}
diff --git a/out b/out
index 0617957..b45c92b 100755
--- a/out
+++ b/out
@@ -1 +1,37 @@
 #!/usr/bin/env sh
+
+set -e
+set -o pipefail
+
+. ./common
+
+cd "$1"
+files="$(find . | sed -e '/^\.$/d' -e 's|^./||')"
+tarfile="$(mktemp -tp /tmp)"
+remote_tarfile="$(mktemp -u)"
+tar -cf "$tarfile" ./*
+scp -F "$CONFIG_PATH" "$tarfile" "$HOSTNAME:$remote_tarfile"
+ssh -F "$CONFIG_PATH" "$HOSTNAME" sh -s << EOF
+    set -e
+    cd "$(get_directory)"
+    tar xf "$remote_tarfile"
+    rm "$remote_tarfile"
+    if [ "$(get_command)" = "null" ]; then
+        exit 0
+    fi
+    cd "$(get_workdir)"
+    $(get_command | jq .[] | tr '\n"' " '") >&2
+    # echo "\$command_log" >&2
+EOF
+
+get_files_for_new_version() {
+    echo "$files" | xargs printf "$(get_directory)/%s\n"
+}
+
+version="$(compute_version "$(fetch_file_infos get_files_for_new_version)")"
+
+jq -r tostring << EOF
+{
+    "version": $version
+}
+EOF