extend examples a bit

test1/exec-demo.service

@@ -0,0 +1,5 @@
+[Meta]
+Description=Simple Execution Demo
+
+[Service]
+ExecStart=/bin/ls

test1/fifo-demo.service

@@ -0,0 +1,8 @@
+[Meta]
+Description=FIFO Activation Demo Service
+
+[Service]
+ExecStartPre=/bin/echo "Wow, es geht los!"
+#ExecStart=/bin/bash -c 'read a <&3 ; echo "GOT: $a"'
+ExecStart=/bin/bash -c 'cat <&3'
+Type=simple

test1/fifo-demo.socket

@@ -0,0 +1,6 @@
+[Meta]
+Description=FIFO Activation Demo Socket
+
+[Socket]
+ListenFIFO=/tmp/systemd-fifo-demo
+ExecStartPost=/bin/echo "OK, we're ready, now write something to /tmp/systemd-fifo-demo"

test1/multiuser.target.wants/exec-demo.service

@@ -0,0 +1 @@
+../exec-demo.service

test1/multiuser.target.wants/fifo-demo.socket

@@ -0,0 +1 @@
+../fifo-demo.socket