From 918d09238a5420f44862afc0f0ab05803b6240b3 Mon Sep 17 00:00:00 2001
From: Mark McGranaghan <mmcgrana@gmail.com>
Date: Fri, 21 Sep 2012 08:19:55 -0700
Subject: [PATCH] command-line-args

---
 044-args.go              | 12 ------------
 044-command-line-args.go | 25 +++++++++++++++++++++++++
 tool/index.txt           |  2 +-
 3 files changed, 26 insertions(+), 13 deletions(-)
 delete mode 100644 044-args.go
 create mode 100644 044-command-line-args.go

diff --git a/044-args.go b/044-args.go
deleted file mode 100644
index 1fb98e5..0000000
--- a/044-args.go
+++ /dev/null
@@ -1,12 +0,0 @@
-package main
-
-import ("os"; "fmt")
-
-func main() {
-	argsWithProgram := os.Args
-	argsWithoutProgram := os.Args[1:]
-	arg := os.Args[3]
-	fmt.Println(argsWithProgram)
-	fmt.Println(argsWithoutProgram)
-	fmt.Println(arg)
-}
diff --git a/044-command-line-args.go b/044-command-line-args.go
new file mode 100644
index 0000000..03244ad
--- /dev/null
+++ b/044-command-line-args.go
@@ -0,0 +1,25 @@
+package main                        // Use `os.Args` to access command-line arguments and
+                                    // the name of the program.
+import ("os"; "fmt")
+
+func main() {
+	argsWithProg := os.Args         // `os.Args` includes the program name as the first
+	argsWithoutProg := os.Args[1:]  // value.
+
+	arg := os.Args[3]               // `Args` are a slice, you can get individual args
+                                    // with normal indexing.
+
+	fmt.Println(argsWithProg)       
+	fmt.Println(argsWithoutProg)
+	fmt.Println(arg)
+}
+
+/*
+$ go build command-line-args        // Build a `command-line-args` binary so that we have
+                                    // the expected program name.
+
+$ ./command-line-args a b c d
+[command-line-args a b c d]       
+[a b c d]
+c
+*/
diff --git a/tool/index.txt b/tool/index.txt
index 301dcd9..b6c04e3 100644
--- a/tool/index.txt
+++ b/tool/index.txt
@@ -41,7 +41,7 @@ select
 timeout
 string-fns
 bytes
-args
+command-line-args
 burstable-rate-limiting
 dns
 elapsed