main: fail-pretty with no args

Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
2020-03-04 10:08:24 -05:00 · 2020-03-04 10:08:24 -05:00 · e98f614543
commit e98f614543
parent 22a474917c
1 changed files with 4 additions and 0 deletions
--- a/main.go
+++ b/main.go
@ -8,6 +8,10 @@ import (
 )

 func main() {
+	if len(os.Args[1:]) == 0 {
+		fmt.Println("please provide path to a tar archive")
+		os.Exit(1)
+	}
 	fh, err := os.Open(os.Args[1])
 	if err != nil {
 		log.Fatal(err)