diff --git a/scripts/relative_path.sh b/scripts/relative_path.sh
new file mode 100644
--- /dev/null
+++ b/scripts/relative_path.sh
@@ -0,0 +1,40 @@
+#!/bin/bash
+# both $1 and $2 are absolute paths (biginning with /)
+# returns $2 relative to $1
+
+source=$1
+target=$2
+
+common_part=$source # for now
+result="" # for now
+
+while [[ "${target#$common_part}" == "${target}" ]]; do
+    # no match, means that candidate common part is not correct
+    # go up one level (reduce common part)
+    common_part="$(dirname $common_part)"
+    # and record that we went back, with correct / handling
+    if [[ -z $result ]]; then
+        result=".."
+    else
+        result="../$result"
+    fi
+done
+
+if [[ $common_part == "/" ]]; then
+    # special case for root (no common path)
+    result="$result/"
+fi
+
+# since we now have identified the common part,
+# compute the non-common part
+forward_part="${target#$common_part}"
+
+# and now stick all parts together
+if [[ -n $result ]] && [[ -n $forward_part ]]; then
+    result="$result$forward_part"
+elif [[ -n $forward_part ]]; then
+    # extra slash removal
+    result="${forward_part:1}"
+fi
+
+echo $result