diff --git a/2013/robison/README.md b/2013/robison/README.md
index d6f9e653e..927e7f4dd 100644
--- a/2013/robison/README.md
+++ b/2013/robison/README.md
@@ -9,14 +9,16 @@ make
 
 ```sh
 ./robison
+# enter an expression
+
+echo expression | ./robison
 ```
 
 
 ### Try:
 
 ```sh
-echo '1*2*3*4*5*6*7*8*9%1000' | ./robison
-echo '100000000000000000000*(20*(1+(99477941840441*50)))/31664812345028528' | ./robison
+./try.sh
 ```
 
 
diff --git a/2013/robison/try.sh b/2013/robison/try.sh
new file mode 100755
index 000000000..3d24df037
--- /dev/null
+++ b/2013/robison/try.sh
@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+#
+# try.sh - demonstrate IOCCC winner 2013/robison
+#
+
+# make sure CC is set so that when we do make CC="$CC" it isn't empty. Doing it
+# this way allows us to have the user specify a different compiler in an easy
+# way.
+if [[ -z "$CC" ]]; then
+    CC="cc"
+fi
+
+make CC="$CC" all >/dev/null || exit 1
+
+# clear screen after compilation so that only the entry is shown
+clear
+
+read -r -n 1 -p "Press any key to run: echo '1*2*3*4*5*6*7*8*9%1000' | ./robison: "
+echo 1>&2
+echo '1*2*3*4*5*6*7*8*9%1000' | ./robison
+echo 1>&2
+
+read -r -n 1 -p "Press any key to run: echo '100000000000000000000*(20*(1+(99477941840441*50)))/31664812345028528' | ./robison: "
+echo 1>&2
+echo '100000000000000000000*(20*(1+(99477941840441*50)))/31664812345028528' | ./robison
diff --git a/thanks-for-fixes.md b/thanks-for-fixes.md
index c37824551..7a63329ce 100644
--- a/thanks-for-fixes.md
+++ b/thanks-for-fixes.md
@@ -3628,6 +3628,11 @@ Firefox both had the problem.
 implicitly (Linux doesn't seem to but macOS does).
 
 
+## [2013/robison](2013/robison/robison.c) ([README.md](2013/robison/README.md))
+
+[Cody](#cody) added the [try.sh](2013/robison/try.sh) script.
+
+
 # <a name="2014"></a>2014