Add version and help output to command line utilities.

1 files changed, 9 insertions, 0 deletions

diff --git a/src/err.c b/src/err.c
index 73aaba7..5c4d8d8 100644
--- a/src/err.c
+++ b/src/err.c
@@ -60,3 +60,12 @@ packerror(const char *fmt, ...)
 	va_end(ap);
 }
 
+void
+version(void)
+{
+	printf("%s (%s) %s\n", progname, PACKAGE_TARNAME, PACKAGE_VERSION);
+	printf("Copyright (C) 2013 Sergey Poznyakoff\n");
+	printf("License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>\n");
+	printf("This is free software: you are free to change and redistribute it.\n");
+	printf("There is NO WARRANTY, to the extent permitted by law.\n");
+}