Module: monitoring-plugins
 Branch: master
 Commit: 8ae415ee4ceddeed1c1a1e0e6e64175cff6731c3
 Author: Lorenz Kästle <12514511+rincewinds...@users.noreply.github.com>
   Date: Mon Jun 23 09:26:13 2025 +0200
    URL: 
https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=8ae415ee

Improve check_icmp help output

---

 plugins-root/check_icmp.c | 48 +++++++++++++++++++----------------------------
 1 file changed, 19 insertions(+), 29 deletions(-)

diff --git a/plugins-root/check_icmp.c b/plugins-root/check_icmp.c
index 55405b8a..0c69d31c 100644
--- a/plugins-root/check_icmp.c
+++ b/plugins-root/check_icmp.c
@@ -2045,32 +2045,32 @@ unsigned short icmp_checksum(uint16_t *packet, size_t 
packet_size) {
 }
 
 void print_help(void) {
-       /*print_revision (progname);*/ /* FIXME: Why? */
+       // print_revision (progname); /* FIXME: Why? */
        printf("Copyright (c) 2005 Andreas Ericsson <a...@op5.se>\n");
 
        printf(COPYRIGHT, copyright, email);
 
-       printf("\n\n");
-
        print_usage();
 
        printf(UT_HELP_VRSN);
        printf(UT_EXTRA_OPTS);
 
        printf(" %s\n", "-H");
-       printf("    %s\n", _("specify a target"));
+       printf("    %s\n",
+                  _("specify a target, might be one of: resolveable name, IPv6 
address, IPv4 address "
+                        "(necessary, can be given multiple times)"));
        printf(" %s\n", "[-4|-6]");
-       printf("    %s\n", _("Use IPv4 (default) or IPv6 to communicate with 
the targets"));
+       printf("    %s\n", _("Use IPv4 or IPv6 only to communicate with the 
targets"));
        printf(" %s\n", "-w");
-       printf("    %s", _("warning threshold (currently "));
+       printf("    %s", _("warning threshold (default "));
        printf("%0.3fms,%u%%)\n", (float)DEFAULT_WARN_RTA / 1000, 
DEFAULT_WARN_PL);
        printf(" %s\n", "-c");
-       printf("    %s", _("critical threshold (currently "));
+       printf("    %s", _("critical threshold (default "));
        printf("%0.3fms,%u%%)\n", (float)DEFAULT_CRIT_RTA / 1000, 
DEFAULT_CRIT_PL);
 
        printf(" %s\n", "-R");
        printf("    %s\n",
-                  _("RTA, round trip average,  mode  warning,critical, ex. 
100ms,200ms unit in ms"));
+                  _("RTA (round trip average)  mode  warning,critical, ex. 
100ms,200ms unit in ms"));
        printf(" %s\n", "-P");
        printf("    %s\n", _("packet loss mode, ex. 40%,50% , unit in %"));
        printf(" %s\n", "-J");
@@ -2080,42 +2080,34 @@ void print_help(void) {
        printf(" %s\n", "-S");
        printf("    %s\n", _("score  mode, max value 100  warning,critical, ex. 
80,70 "));
        printf(" %s\n", "-O");
-       printf("    %s\n", _("detect out of order ICMP packts "));
-       printf(" %s\n", "-H");
-       printf("    %s\n", _("specify a target"));
-       printf(" %s\n", "-s");
-       printf("    %s\n", _("specify a source IP address or device name"));
+       printf("    %s\n",
+                  _("detect out of order ICMP packts, if such packets are 
found, the result is CRITICAL"));
        printf(" %s\n", "-n");
-       printf("    %s", _("number of packets to send (currently "));
-       printf("%u)\n", DEFAULT_NUMBER_OF_PACKETS);
        printf(" %s\n", "-p");
-       printf("    %s", _("number of packets to send (currently "));
+       printf("    %s", _("number of packets to send (default "));
        printf("%u)\n", DEFAULT_NUMBER_OF_PACKETS);
        printf(" %s\n", "-i");
-       printf("    %s", _("max packet interval (currently "));
+       printf("    %s", _("max packet interval (default "));
        printf("%0.3fms)\n", (float)DEFAULT_PKT_INTERVAL / 1000);
        printf(" %s\n", "-I");
-       printf("    %s", _("max target interval (currently "));
-       printf("%0.3fms)\n", (float)DEFAULT_TARGET_INTERVAL / 1000);
+       printf("    %s%0.3fms)\n    The time intervall to wait in between one 
target and the next",
+                  _("max target interval (default "), 
(float)DEFAULT_TARGET_INTERVAL / 1000);
        printf(" %s\n", "-m");
        printf("    %s", _("number of alive hosts required for success"));
        printf("\n");
        printf(" %s\n", "-l");
-       printf("    %s", _("TTL on outgoing packets (currently "));
+       printf("    %s", _("TTL on outgoing packets (default "));
        printf("%u)\n", DEFAULT_TTL);
-       printf(" %s\n", "-t");
-       printf("    %s", _("timeout value (seconds, currently  "));
-       printf("%u)\n", DEFAULT_TIMEOUT);
        printf(" %s\n", "-b");
        printf("    %s\n", _("Number of icmp data bytes to send"));
-       printf("    %s %lu + %d)\n", _("Packet size will be data bytes + icmp 
header (currently"),
+       printf("    %s %lu + %d)\n", _("Packet size will be data bytes + icmp 
header (default"),
                   DEFAULT_PING_DATA_SIZE, ICMP_MINLEN);
        printf(" %s\n", "-v");
-       printf("    %s\n", _("verbose"));
+       printf("    %s\n", _("Verbosity, can be given multiple times (for 
debugging)"));
        printf("\n");
        printf("%s\n", _("Notes:"));
        printf(" %s\n", _("If none of R,P,J,M,S or O is specified, default 
behavior is -R -P"));
-       printf(" %s\n", _("The -H switch is optional. Naming a host (or 
several) to check is not."));
+       printf(" %s\n", _("Naming a host (or several) to check is not."));
        printf("\n");
        printf(" %s\n", _("Threshold format for -w and -c is 200.25,60% for 
200.25 msec RTA and 60%"));
        printf(" %s\n", _("packet loss.  The default values should work well 
for most users."));
@@ -2128,8 +2120,6 @@ void print_help(void) {
           hops")); printf ("%s\n", _("are spent and CRITICAL if >= 14 hops are 
spent.")); printf
           ("%s\n\n", _("NOTE: Some systems decrease TTL when forming 
ICMP_ECHOREPLY, others do
           not."));*/
-       printf("\n");
-       printf(" %s\n", _("The -v switch can be specified several times for 
increased verbosity."));
        /*  printf ("%s\n", _("Long options are currently unsupported."));
                        printf ("%s\n", _("Options marked with * require an 
argument"));
                        */
@@ -2139,7 +2129,7 @@ void print_help(void) {
 
 void print_usage(void) {
        printf("%s\n", _("Usage:"));
-       printf(" %s [options] [-H] host1 host2 hostN\n", progname);
+       printf(" %s [options] [-H host1 [-H host2 [-H hostN]]]\n", progname);
 }
 
 static add_host_wrapper add_host(char *arg, check_icmp_execution_mode mode,

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