renumber

069-exit/exit.go

@@ -0,0 +1,16 @@
+// Exit
+
+package main            
+
+// Use `os.Exit` to immediatly exit with a given
+// status.
+import  "os"
+
+func main() {
+    // This `println` will never be reached because the
+    // exit is immediate.
+    defer println("!")  
+	os.Exit(3)  
+}
+
+// todo: discuss building before getting here

069-exit/exit.sh

@@ -0,0 +1,11 @@
+#  If you run `exit.go` using `go run`, the exit
+# will be picked up by `go` and printed.
+$ go run exit.go
+exit status 3
+
+# By building and executing a binary you can see
+# the status in the terminal.
+$ go build exit.go
+$ ./exit
+$ echo $?
+3