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-rw-r--r--src/iptool.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/src/iptool.c b/src/iptool.c
index 105f7a8..cf2f190 100644
--- a/src/iptool.c
+++ b/src/iptool.c
@@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0
/*
- * subnet_calc.c - Simple IP subnet calculator
+ * iptool.c - Simple IP subnet calculator
*
* Takes an IPv4 address and a prefix length, then calculates:
* - IP class
@@ -15,8 +15,6 @@
#include <stdio.h>
#include <stdlib.h>
-#define PROGRAM_NAME "iptool"
-
static uint32_t ip_to_u32(const char *ip_str)
{
int o1, o2, o3, o4;
@@ -93,7 +91,7 @@ int main(int argc, char *argv[])
uint32_t total, usable;
if (argc < 3) {
- fprintf(stderr, "Usage: %s <ip> <prefix>\n", PROGRAM_NAME);
+ fprintf(stderr, "Usage: %s <ip> <prefix>\n", argv[0]);
return 1;
}