Added in place option

README.md

@@ -8,13 +8,15 @@ Sébastien Lavoie <[email protected]>
 
 Johan Haleby
 
+Stefan Rinke
+
 See http://code.haleby.se/2015/11/20/simple-templating-engine-in-bash/  and http://blog.lavoie.sl/2012/11/simple-templating-system-using-bash.html for more details
 
 ## Installation
 
 To install templater in linux type:
 
-    sudo curl -L https://raw.githubusercontent.com/johanhaleby/bash-templater/master/templater.sh -o /usr/local/bin/templater
+    sudo curl -L https://raw.githubusercontent.com/sker65/bash-templater/master/templater.sh -o /usr/local/bin/templater
     sudo chmod +x /usr/local/bin/templater
 
 ## Usage
@@ -38,6 +40,14 @@ AUTHOR=Johan
 VERSION=1.2.3
 ```
 
+Added an option -r to replace all variables in the templace *in place* and save the original template as .bak.
+
+example:
+```bash
+AUTHOR=Stefan templater template -r
+```
+
+
 Don't print any warning messages:
 
 ```bash

templater.sh

@@ -44,6 +44,8 @@ where:
         Don't do anything, just print the result of the variable expansion(s)
     -f, --file
         Specify a file to read variables from
+    -r, --replace
+        Replace template file with rendered version
     -s, --silent
         Don't print warning messages (for example if no variables are found)
 
@@ -76,6 +78,9 @@ if [ "$#" -ne 0 ]; then
         -p|--print)
             print_only="true"
             ;;
+        -r|--replace)
+            replace="true"
+            ;;
         -f|--file)
             config_file="$2"
             ;;
@@ -165,5 +170,9 @@ for var in $vars; do
     replaces="-e 's/{{$var}}/${value}/g' $replaces"    
 done
 
+if [[ "$replace" == "true" ]]; then
+    SED_OPT="-i .bak"
+fi
+
 escaped_template_path=$(echo $template | sed 's/ /\\ /g')
-eval sed $replaces "$escaped_template_path"
+eval sed $SED_OPT $replaces "$escaped_template_path"