freebsd-dev/usr.sbin/cron/crontab
Maxim Sobolev 2543786a37 Add per-second scheduling into the cron(8). Right now it's
only available via the new @every_second shortcut. ENOTIME to
implement crontab(5) format extensions to allow more flexible
scheduling.

In order to address some concerns expressed by Terry Lambert
while discussing the topic few years ago, about per-second cron
possibly causing some bad effects on /etc/crontab by stat()ing
it every second instead of every minute now (i.e. atime update),
only check that database needs to be reloaded on every 60-th
loop run. This should be close enough to the current behaviour.

Add "@every_minute" shortcut while I am here.

MFC after:	1 month
2012-10-15 08:21:49 +00:00
..
crontab.1 List /var/cron/tabs in FILES and add descriptions for the other entries. 2010-05-14 01:25:30 +00:00
crontab.5 Add per-second scheduling into the cron(8). Right now it's 2012-10-15 08:21:49 +00:00
crontab.c Rework all non-contributed files that use `struct timezone'. 2012-09-01 14:45:15 +00:00
Makefile Use WARNS?= instead of WARNS= 2008-11-18 00:12:15 +00:00