chg: Switched make with switch-with-bk.sh

makebk

@@ -1,13 +0,0 @@
-#!/bin/sh
-
-# This simply makes backup of file(s) as filename.bak
-
-if [ $# -ge 1 ]; then
-    for f in $@
-    do
-        [ -f "$f" ] && cp "$f"{,.bak}
-    done
-else
-    echo "No filenames passed."
-    exit 1
-fi

switch-with-bk.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+# This simply switched the given file(s) with a $filename.bak file if it exists
+# and creates a backup if it doesn't exist
+
+if [ $# -ge 1 ]; then
+    for f in $@
+    do
+        [ -f "$f.bak" ] && mv "$f.bak" "$f.tmp"
+        [ -f "$f" ] && cp -l "$f"{,.bak}
+        [ -f "$f.tmp" ] && mv "$f.tmp" "$f"
+    done
+else
+    echo "No filenames passed."
+    exit 1
+fi