Команда date

• Локализация системы

• Set Time, Date Timezone in Linux from Command Line

date +%T -s "11:14:00"

timedatectl set-time "2018-10-06 10:35:00"

$ date

$ date -u

$ date "+%Y-%m-%d_%H:%M:%S"

$ date -v-1d "+%Y.%m.%d"

$ date --date "1 day ago" +%Y-%m-%d

$ date --date "1 hour ago" "+%Y-%m-%d %H"