date

Print or set the system date and time.

Installation

• Debian package: coreutils

Usage

A [GNU] in the comment indicates that the command is only possible with the GNU variant of the program.

Short form

date -uIs             #1 Print current date in ISO 8601 format with seconds precision and time zone set to UTC
date -uIs -d "<date>" #2 Convert <date> to the same format as in #1(<date> example: "Thu, 12 Jan 2023 08:16:44") [GNU]

Long form

date --iso-8601=seconds --utc                 #1
date --iso-8601=seconds --utc --date "<date>" #2 [GNU]