chrt: slice up the usage text and normalize its layout

Signed-off-by: Benno Schulenberg <bensberg@justemail.net>

diff --git a/schedutils/chrt.c b/schedutils/chrt.c
index b6923b2b5b252609f4970653b8bddc2e8e3b2f1d..b1189e0722624bc374d6b8e362ad317f00acafeb 100644 (file)
--- a/schedutils/chrt.c
+++ b/schedutils/chrt.c
@@ -58,34 +58,37 @@ static void __attribute__((__noreturn__)) show_usage(int rc)
        FILE *out = rc == EXIT_SUCCESS ? stdout : stderr;
 
        fputs(_("Show or change the real-time scheduling attributes of a process.\n"), out);
-       fprintf(out, _(
-       "\nSet policy:\n"
-       "  chrt [options] <priority> <command> [<arg>...]\n"
-       "  chrt [options] -p <priority> <pid>\n"
-       "\nGet policy:\n"
-       "  chrt [options] -p <pid>\n"));
-
-       fprintf(out, _(
-       "\nScheduling policies:\n"
-       "  -b | --batch         set policy to SCHED_BATCH\n"
-       "  -f | --fifo          set policy to SCHED_FIFO\n"
-       "  -i | --idle          set policy to SCHED_IDLE\n"
-       "  -o | --other         set policy to SCHED_OTHER\n"
-       "  -r | --rr            set policy to SCHED_RR (default)\n"));
+       fputs(USAGE_SEPARATOR, out);
+       fputs(_("Set policy:\n"
+       " chrt [options] <priority> <command> [<arg>...]\n"
+       " chrt [options] -p <priority> <pid>\n"), out);
+       fputs(USAGE_SEPARATOR, out);
+       fputs(_("Get policy:\n"
+       " chrt [options] -p <pid>\n"), out);
+
+       fputs(USAGE_SEPARATOR, out);
+       fputs(_("Policy options:\n"), out);
+       fputs(_(" -b, --batch          set policy to SCHED_BATCH\n"), out);
+       fputs(_(" -f, --fifo           set policy to SCHED_FIFO\n"), out);
+       fputs(_(" -i, --idle           set policy to SCHED_IDLE\n"), out);
+       fputs(_(" -o, --other          set policy to SCHED_OTHER\n"), out);
+       fputs(_(" -r, --rr             set policy to SCHED_RR (default)\n"), out);
 
 #ifdef SCHED_RESET_ON_FORK
-       fprintf(out, _(
-       "\nScheduling flags:\n"
-       "  -R | --reset-on-fork set SCHED_RESET_ON_FORK for FIFO or RR\n"));
+       fputs(USAGE_SEPARATOR, out);
+       fputs(_("Scheduling flag:\n"), out);
+       fputs(_(" -R, --reset-on-fork  set SCHED_RESET_ON_FORK for FIFO or RR\n"), out);
 #endif
-       fprintf(out, _(
-       "\nOptions:\n"
-       "  -a | --all-tasks     operate on all the tasks (threads) for a given pid\n"
-       "  -h | --help          display this help\n"
-       "  -m | --max           show min and max valid priorities\n"
-       "  -p | --pid           operate on existing given pid\n"
-       "  -v | --verbose       display status information\n"
-       "  -V | --version       output version information\n\n"));
+       fputs(USAGE_SEPARATOR, out);
+       fputs(_("Other options:\n"), out);
+       fputs(_(" -a, --all-tasks      operate on all the tasks (threads) for a given pid\n"), out);
+       fputs(_(" -m, --max            show min and max valid priorities\n"), out);
+       fputs(_(" -p, --pid            operate on existing given pid\n"), out);
+       fputs(_(" -v, --verbose        display status information\n"), out);
+
+       fputs(USAGE_SEPARATOR, out);
+       fputs(USAGE_HELP, out);
+       fputs(USAGE_VERSION, out);
 
        fprintf(out, USAGE_MAN_TAIL("chrt(1)"));
        exit(rc);