Convert Unix timestamp to a date string

Question

Is there a quick  one-liner way to convert a Unix timestamp to a date from the Unix command line  date might work  except it s rather awkward to specify each element  month  day  year  hour  etc    and I can t figure out how to get it to work properly  It seems like there might be an easier way     am I missing something

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Python   python -c  from datetime import datetime  print datetime fromtimestamp  TIMESTAMP

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As  TomMcKenzie says in a comment to another answer  date -r 123456789 is arguably a more common  i e  more widely implemented  simple solution for times given as seconds since the Unix Epoch  but unfortunately there s no universal guaranteed portable solution   The -d option on many types of systems means something entirely different than GNU Date s --date extension   Sadly GNU Date doesn t interpret -r the same as these other implementations   So unfortunately you have to know which version of date you re using  and many older Unix date commands don t support either option   Even worse  POSIX date recognizes neither -d nor -r and provides no standard way in any command at all  that I know of  to format a Unix time from the command line  since POSIX Awk also lacks strftime       You can t use touch -t and ls because the former does not accept a time given as seconds since the Unix Epoch    Note though The One True Awk available direct from Brian Kernighan does now have the strftime   function built-in as well as a systime   function to return the current time in seconds since the Unix Epoch   so perhaps the Awk solution is the most portable

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Slight correction to dabest1 s answer above  Specify the timezone as UTC  not GMT     date -d  1970-01-01 1416275583 sec GMT  Tue Nov 18 00 53 03 GMT 2014   date -d  1970-01-01 1416275583 sec UTC  Tue Nov 18 01 53 03 GMT 2014   The second one is correct  I think the reason is that in the UK  daylight saving was in force continually from 1968 to 1971

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date -d  1278999698    Y- m- d  H  M  S  Where the number behind   is the number in seconds

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Put the following in your    bashrc    function unixts     date -d    1       Example usage     unixts 1551276383  Wed Feb 27 14 06 23 GMT 2019

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If you find the notation awkward  maybe the -R-option does help  It outpouts the date in RFC 2822 format  So you won t need all those identifiers  date -d  1278999698 -R  Another possibility is to output the date in seconds in your locale  date -d  1278999698   c  Should be easy to remember   -

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Other examples here are difficult to remember  At its simplest   date -r 1305712800

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awk  BEGIN   print strftime   c   1271603087

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This solution works with versions of date which do not support date -d    It does not require AWK or other commands  A Unix timestamp is the number of seconds since Jan 1  1970  UTC so it is important to specify UTC   date -d  1970-01-01 1357004952 sec UTC  Mon Dec 31 17 49 12 PST 2012   If you are on a Mac  then use   date -r 1357004952   Command for getting epoch   date   s 1357004952   Credit goes to Anton  BASH  Convert Unix Timestamp to a Date

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With GNU s date you can do   date -d    TIMESTAMP        date -d  0 Wed Dec 31 19 00 00 EST 1969    From  BASH  Convert Unix Timestamp to a Date   On OS X  use date -r   date -r   TIMESTAMP    Alternatively  use strftime    It s not available directly from the shell  but you can access it via gawk  The  c specifier displays the timestamp in a locale-dependent manner   echo   TIMESTAMP    gawk   print strftime   c    0          echo 0   gawk   print strftime   c    0    Wed 31 Dec 1969 07 00 00 PM EST

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The standard Perl solution is   echo  TIMESTAMP   perl -nE  say scalar gmtime        or localtime  if preferred

[bash] Convert Unix timestamp to a date string

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