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    $ date Sun Sep 3 16:00:03 MDT 2017

    The date command returns the date which is a novel concept. It also returns the time in just about any way you would like it. Each system has a default format but the date command is very versitile. The date command goes like this:

    However, that can be broken down into many different versions. This page documents the date formats available with date.

    CREATED 2017-09-03 15:58:46.0


    UPDATED 2017-09-03 15:58:46.0


    -d --date=string Display a date relative to the current date as described by string. Yesterday, tommorrow, x days ago, are a few examples.
    -f --f=datefile read the date formats from a file to produce a date for each line $ cat dateFile.txt 1 day ago 10 minutes ago 5 hours ago tomorrow yesterday
    $ date -f dateFile.txt Sat Sep 2 17:09:06 MDT 2017 Sun Sep 3 16:59:06 MDT 2017 Sun Sep 3 12:09:06 MDT 2017 Mon Sep 4 17:09:06 MDT 2017 Sat Sep 2 17:09:06 MDT 2017

    -ITIMESPEC --iso-8601[=TIMESPEC] Output date/time in ISO 8601 format
    -r --reference=FILE output the last time FILE was modified
    -R --rfc-822 Prints date string iaw RFC 822
    -s --set=STRING Set the time described by string.
    -u --utc-universal Print or set universal coordinated time
    -h --help Displays... ahhh... help?
    -v --version Pretty sure it displays the version of the date software.

    CREATED 2017-09-03 16:09:10.0


    UPDATED 2017-09-03 16:09:14.0


    Date Description
    D Date in mm/dd/yy format
    x Date in standard format
    Year Description
    C Century - the first two digits of a four digit year
    Y or G 4 digit year e.g. 2017
    y or g 2 digit year e.g. 17
    Month Description
    b or h Month abbr name
    B Month full name
    m Month number
    Week Description
    W or U Week number. Number of the week in the year
    V Week number of the year when the begining week has more than 4 days.
    a Week day name abbr
    A Weed day full name
    u or w Number of the day of the week (sun..sat) (0..6)
    d Day number of the month
    e Day number of the month with no preceeding zero
    j Day of the year (julian date)
    Time Description
    p AM or PM
    r 12 hour time
    R 24 hour time
    T or X 24 hour time with seconds
    Z Time zone or offset
    Hour Description
    H or k Hour (0-23)
    I or l Hour (1-12)
    Minutes Description
    M Minute of the hour (0-59)
    Seconds Description
    S Seconds of the minute (0-59)
    s Seconds since the epoch

    Date pads all numeric fields with zeros. To prevent this there are two options.

    • - Hyphen which removes any preceeding zeros and
    • _ Underscore which pads the output with spaces.

    CREATED 2017-09-03 16:04:11.0


    UPDATED 2017-09-06 18:03:01.0


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