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-rw-r--r--main.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/main.c b/main.c
index febe505..2c1eaa6 100644
--- a/main.c
+++ b/main.c
@@ -28,8 +28,10 @@ int main(int argc, char **argv) {
if(argv[1])
arg = argv[1];
- else
+ else {
+ (void)fprintf(stderr, "usage: %s <interface>\n", __progname);
exit(2);
+ }
initscr();
curs_set(0);