add short flags for rest of the flags and print usage when no flags are present

1 files changed, 4 insertions, 4 deletions

diff --git a/main.go b/main.go
index b46d0c7..b6b1e1a 100644
--- a/main.go
+++ b/main.go
@@ -19,13 +19,13 @@ func main() {
 
         code := getopt.StringLong("code", 'c', "", "Code to enter")
         course := getopt.IntLong("course", 'C', -1, "Canvas course number")
-        list_all := getopt.BoolLong("list-all", 0, "List all courses")
-        list_favorites := getopt.BoolLong("list-favorites", 0, "List favorite courses")
-        help := getopt.BoolLong("help", 0, "Help")
+        list_all := getopt.BoolLong("list-all", 'L', "List all courses")
+        list_favorites := getopt.BoolLong("list-favorites", 'F', "List favorite courses")
+        help := getopt.BoolLong("help", 'h', "Help")
 
         getopt.Parse()
 
-        if *help {
+        if *help || (*list_all == false && *list_favorites == false && *code == "" && *course == -1) {
                 getopt.Usage()
                 os.Exit(0)
         }