w(1): always print "up" before uptime

[Kimmo Suominen]

Hi,

The following patch will make w(1) always print the word "up" before the
uptime. Currently "up" is not printed if uptime is less than a minute.

I ran into this with a script that parses the output from w(1), and it
got confused by "10:08AM 45 secs" as it was looking for the word "up" to
anchor its parsing.

Kind regards,
+ Kimmo

--- w.c.orig    2021-11-28 16:33:09.275819897 +0200
+++ w.c 2021-11-28 16:33:48.395149662 +0200
@@ -441,6 +441,7 @@ pr_header(time_t *nowp, int nusers)
         * Print how long system has been up.
         */
        if (clock_gettime(CLOCK_BOOTTIME, &boottime) != -1) {
+               (void)printf(" up");
                uptime = boottime.tv_sec;
                if (uptime > 59) {
                        uptime += 30;
@@ -449,7 +450,6 @@ pr_header(time_t *nowp, int nusers)
                        hrs = uptime / SECSPERHOUR;
                        uptime %= SECSPERHOUR;
                        mins = uptime / 60;
-                       (void)printf(" up");
                        if (days > 0)
                                (void)printf(" %d day%s,", days,
                                    days > 1 ? "s" : "");