services/tmptsync: init

scripts/tmptsync.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env sh
+#
+# Super simple script that saves clock to file and reads from it later
+# Something like fake-hwclock from debian
+# CC0-1.0
+
+CMD="${1:-save}"
+
+if [ ! -v FILE ]; then
+    echo 'missing $FILE'
+    exit 64
+fi
+
+case $CMD in 
+    save)
+        date -u '+%Y-%m-%d %H:%M:%S' > $FILE
+        ;;
+    load)
+        if [ ! -e $FILE ]; then
+            echo "attempted to load from nonexistent file"
+            exit 65
+        fi
+        NEW=$(cat $FILE)
+        date -u -s "$NEW"
+        ;;
+    *)
+        echo "unknown subcommand"
+        exit 66
+        ;;
+esac