Merge pull request #49 from Aashna-Agrawal/command_line_use

Command Line Arguments Example

Author: SimonWaldherr

advanced/command_line_arguments.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+)
+
+func main() {
+	env := flag.String("env", "dev", "Environment(dev, qa, stg, prod)")
+	cron := flag.Bool("consumer", false, "boolean")
+	//Parse parses the command-line flags
+	flag.Parse()
+	fmt.Println("The environment set is", *env)
+	fmt.Println("The consumer flag retrieved from command line is", *cron)
+}

readme.md

@@ -535,6 +535,14 @@ Public-key/asymmetric cryptography signing and validating
 go run ppk-crypto.go
 ```
 
+Command Line Arguments Golang Example
+We can get argument values though command line by specifying the operator '-' with the name of the argument and the value to be set. E.g. -env=qa
+
+```Shell
+go run command_line_arguments.go
+go run command_line_arguments.go -env=qa -consumer=true
+```
+
 ## Compile
 
 One great aspect of Golang is, that you can start go applications via ```go run name.go```, but also compile it to an executable with ```go build name.go```. After that you can start the compiled version which starts much faster.