Adding a short note on variable interpolation

git-svn-id: https://reductivelabs.com/svn/puppet/trunk@1910 980ebf18-57e1-0310-9a29-db15c13687c0

1 files changed, 14 insertions, 0 deletions

diff --git a/documentation/documentation/language/tutorial.page b/documentation/documentation/language/tutorial.page
index ca3529e1f..461c92e70 100644
--- a/documentation/documentation/language/tutorial.page
+++ b/documentation/documentation/language/tutorial.page
@@ -100,6 +100,20 @@ the builtin [conditionals](structures.html#conditionals):
 
 This is only one assignment, so no errors.
 
+## Variable Interpolation
+
+Variables will get interpolated within double-quoted strings by default.  You
+can disable the interpolation by escaping the dollar sign:
+
+    $str = "A string with a \$dollar sign in it"
+
+During interpolation, you can also surround your variable with curly braces if
+necessary:
+
+    $a = "something"
+    $b = "else"
+    $c = "${a}_${b}"
+
 # Fact Variables (facts)
 
 In addition to variables that are manually assigned (as above), `puppet` also