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main: improve help message

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Describe all chronyd options in the help message.
This commit is contained in:
Miroslav Lichvar 2020-09-22 17:09:51 +02:00
parent 068cd3c311
commit 0e08ca7c89
1 changed files with 28 additions and 2 deletions
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30
main.c
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@ -374,8 +374,34 @@ go_daemon(void)
static void
print_help(const char *progname)
{
printf("Usage: %s [-4|-6] [-n|-d] [-p|-q|-Q] [-r] [-R] [-s] [-t TIMEOUT] [-f FILE|COMMAND...]\n",
progname);
printf("Usage: %s [OPTION]... [DIRECTIVE]...\n\n"
"Options:\n"
" -4\t\tUse IPv4 addresses only\n"
" -6\t\tUse IPv6 addresses only\n"
" -f FILE\tSpecify configuration file (%s)\n"
" -n\t\tDon't run as daemon\n"
" -d\t\tDon't run as daemon and log to stderr\n"
#if DEBUG > 0
" -d -d\t\tEnable debug messages\n"
#endif
" -l FILE\tLog to file\n"
" -L LEVEL\tSet logging threshold (0)\n"
" -p\t\tPrint configuration and exit\n"
" -q\t\tSet clock and exit\n"
" -Q\t\tLog offset and exit\n"
" -r\t\tReload dump files\n"
" -R\t\tAdapt configuration for restart\n"
" -s\t\tSet clock from RTC\n"
" -t SECONDS\tExit after elapsed time\n"
" -u USER\tSpecify user (%s)\n"
" -U\t\tDon't check for root\n"
" -F LEVEL\tSet system call filter level (0)\n"
" -P PRIORITY\tSet process priority (0)\n"
" -m\t\tLock memory\n"
" -x\t\tDon't control clock\n"
" -v, --version\tPrint version and exit\n"
" -h, --help\tPrint usage and exit\n",
progname, DEFAULT_CONF_FILE, DEFAULT_USER);
}
/* ================================================== */