This patch adds the ability to specify time as seconds from epoch using
the @integer syntax. It's a (poorly-documented) gnu-ism (and has been
for a number of years) that is really handy for a couple things.
Examples: Replace ntpdate with a short script, or calculate "when is now
plus 45,100 seconds?".
Please consider applying.
Index: busybox/coreutils/date.c
===================================================================
--- busybox/coreutils/date.c (revision 23570)
+++ busybox/coreutils/date.c (working copy)
@@ -146,6 +146,14 @@
end = '\0';
/* else end != NUL and we error out
*/
}
+ } else if (date_str[0] == '@') {
+ /* The format '@SECONDS' is a poorly-documented
GNU-ism. */
+ /* The 'SECONDS' counts from 1 Jan 1970 - just
like time_t. */
+ int seconds; /* Avoiding casting time_t */
+ if (sscanf(date_str, "@%d%c", &seconds, &end) <
1)
+
bb_error_msg_and_die(bb_msg_invalid_date, date_str);
+ tm = seconds;
+ memcpy(&tm_time, localtime(&tm),
sizeof(tm_time));
} else {
if (sscanf(date_str, "%2u%2u%2u%2u%u%c",
&tm_time.tm_mon,
&tm_time.tm_mday,
&tm_time.tm_hour, &tm_time.tm_min,
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