Creates two user utility functions

docs/kickstart/user/exists?.md

@@ -0,0 +1,9 @@
+# kickstart.user.exists? user
+Checks if `user` already exists
+
+
+### Example
+
+```bash
+$ kickstart.user.exists? root || echo Root-less
+```

docs/kickstart/user/homeFolder.md

@@ -0,0 +1,16 @@
+# kickstart.user.homeFolder user
+
+Looks up the `user` home folder on the `/etc/passwd` file.
+
+### Example
+
+```bash
+$ kickstart.user.homeFolder vagrant
+/home/vagrant
+
+$ kickstart.user.homeFolder root
+/root
+
+$ kickstart.user.homeFolder no-user-existing
+
+```

kickstart/recipes/kickstart/user.sh

@@ -1,5 +1,9 @@
+kickstart.user.exists?() {
+  kickstart.mute id $1
+}
+
 kickstart.user.create() {
-  kickstart.mute id $1 || ( useradd -m -s /bin/bash -U -p `openssl passwd -1 $2` $1 )
+  kickstart.user.exists? $1 || ( useradd -m -s /bin/bash -U -p `openssl passwd -1 $2` $1 )
 }
 
 kickstart.user.is_on_group() {
@@ -18,6 +22,10 @@ kickstart.user.remove_group() {
     usermod -G `kickstart.print_with_separator , ${groups[*]}` $1
 }
 
+kickstart.user.homeFolder() {
+  grep ^$1 /etc/passwd | cut -d: -f 6
+}
+
 kickstart.user.exec.command.module() {
   local cur_dir=`pwd`
   cat <<COMMAND