Added simplified "sort" commabe implementation.

goblin.go

@@ -9,6 +9,7 @@ import(
 	"github.com/jienfak/goblin/mkdir"
 	"github.com/jienfak/goblin/gtrue"
 	"github.com/jienfak/goblin/gfalse"
+	"github.com/jienfak/goblin/sort"
 )
 
 func main() {
@@ -24,6 +25,7 @@ func main() {
 		"echo" : echo.Run,
 		"true" : gtrue.Run,
 		"false" : gfalse.Run,
+		"sort" : sort.Run,
 	}
 
 	if binBase := path.Base(os.Args[0]) ; binBase != "goblin" {

sort/sort.go

@@ -0,0 +1,37 @@
+package sort
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"sort"
+	"io"
+	"flag"
+)
+
+func readLines() []string {
+
+	r := bufio.NewReader(os.Stdin)
+	a := make([]string, 0)
+	for {
+		l, e := r.ReadString('\n')
+		if e==io.EOF {
+			break
+		}
+		a = append(a, l)
+	}
+	return a
+}
+
+func Run(args []string) int {
+	flagSet := flag.NewFlagSet(args[0], flag.ExitOnError)	
+	flagSet.Parse(args[1:])
+	status := 0
+
+	lines := readLines()
+	sort.Strings(lines)
+	for _, l := range lines {
+		fmt.Print(l)
+	}
+	return status
+}