date (command)

From wikieduonline
Revision as of 13:33, 31 January 2022 by Welcome (talk | contribs)
Jump to navigation Jump to search

date[1] command allows to print or set the system date and time.


Linux Basic Examples

$date -I or date --iso-8601
2020-01-28
date --iso-8601=minutes
2020-07-07T08:32+04:00
date --iso-8601=seconds
2014-03-19T16:51:16-0600
$date --rfc-3339=date
2020-01-28
$ date -d now
Wed Aug 18 16:47:31 EDT 2019

$ date -d today
Wed Aug 18 16:47:32 EDT 2019
$ date -d yesterday
Tue Aug 17 16:47:33 EDT 2019

$ date -d tomorrow
Thu Aug 19 16:46:34 EDT 2019

$ date -d sunday
Sun Aug 22 00:00:00 EDT 2019

$ date -d last-sunday
Sun Aug 15 00:00:00 EDT 2019
Other valid date time strings include: last-week, next-week, last-month, next-month, last-year, and next-year.

$ date +%b
Aug 

$date "+%b %d"
Aug 28

$ date +%B
August

$date "+%Y-%m-%d"
2020-10-11

$date "+%F_%H:%M-%Z"
2020-11-22_12:18-UTC

$date --rfc-3339=date
2020-01-28

MacOS Examples

date +%F
2021-07-18
date +%F-%T
2020-08-03-09:14:54
date '+%Y/%m/%d %H:%M:%S'
2021/07/18 16:32:26

Cisco IOS

Activities

  1. Read date man page: http://man7.org/linux/man-pages/man1/date.1.html
  2. Prepend date output at the beginning of each line: cat your_file.txt | while read i; do echo "$(date) $i"; done

See also

Advertising: