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Epoch dates for the start and end of the year/month/day Convert seconds to days, hours and minutes What is epoch time? The Unix epoch (or Unix time or POSIX time or Unix timestamp) is the number of seconds that have elapsed since January 1, 1970 (midnight UTC/GMT), not counting leap seconds (in ISO 8601: 1970-01-01T00:00:00Z). Literally speaking the epoch is Unix time 0 (midnight 1-1-1970), but 'epoch' is often used as a synonym for 'Unix time'. Many Unix systems store epoch dates as a signed 32-bit integer, which might cause problems on January 19, 2038 (known as the Year 2038 problem or Y2038).
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SEGURIDAD EN EL KERNEL /etc/system
* For certain classes of bug exploits
set noexec_user_stack = 1
* Log attempted exploits
set noexec_user_stack_log = 1
* File Descriptor parameter set for SAP
set rlim_fd_cur=2048
set rlim_fd_max=2048
* ZFS arch cache to 128G RAM
set zfs:zfs_arc_max=4294967296
