Add examples that show generation of error messages.

diff --git a/doc/SystemTap_Beginners_Guide/en-US/extras/perror.stp b/doc/SystemTap_Beginners_Guide/en-US/extras/perror.stp
new file mode 100644 (file)
index 0000000..947efbd
--- /dev/null
+++ b/doc/SystemTap_Beginners_Guide/en-US/extras/perror.stp
@@ -0,0 +1,2 @@
+probe vfs.read
+probe vfs.write

diff --git a/doc/SystemTap_Beginners_Guide/en-US/extras/werror.stp b/doc/SystemTap_Beginners_Guide/en-US/extras/werror.stp
new file mode 100644 (file)
index 0000000..075607a
--- /dev/null
+++ b/doc/SystemTap_Beginners_Guide/en-US/extras/werror.stp
@@ -0,0 +1 @@
+probe begin { printf("x") = 1 }