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-rwxr-xr-xponysay6
1 files changed, 6 insertions, 0 deletions
diff --git a/ponysay b/ponysay
index 345dd0e..e07e1e3 100755
--- a/ponysay
+++ b/ponysay
@@ -45,6 +45,12 @@ Options:
EOF
}
+# if no stdin and no argumrnts then print usage and exit
+if [[ -t 0 && $# == 0 ]]; then
+ usage
+ exit
+fi
+
say() {
# Ponies use UTF-8 drawing characters. Prevent a Perl warning.
export PERL_UNICODE=S