Unix / Linux epoch time conversions examples
Last Updated on Saturday, 18 September 2010 09:13 Saturday, 18 September 2010 08:56
Many UNIX application are using an EPOCH time to determine a date, on most Linux systems an EPOCH time started on 1.1.1970 and will end on 18.1.2038 as defined by a time_t UNIX C library. Epoch time digit contains a number of seconds since the start of epoch ( 1.1.1970 and 10 hours ).
To get a better understanding consider an example where epoch number is "1". Now convert this epoch time to a real time/ When using bash we can execute a following command:
~$ date --date "Jan 1, 1970 00:00:00 +0000 + 1 seconds" Thu Jan 1 10:00:01 EST 1970
To get a current epoch time we simply use date command as follows:
~$ date +%s 1284763671
As already mentioned above, to convert a epoch time digit to real time we can use for example by
BASH:
~$ date --date "Jan 1, 1970 00:00:00 +0000 + 1284763671 seconds" Sat Sep 18 08:47:51 EST 2010
or
date -d@1284763671 Sat Sep 18 08:47:51 EST 2010
PERL:
~$ perl -e 'print scalar(localtime(1284763671)), "\n"' Sat Sep 18 08:47:51 2010
NOTE:
To convert to Coordinated Universal Time using bash type:
~$ date -ud@1284763671 Fri Sep 17 22:47:51 UTC 2010
Share this linux post:
Please visit our new Linux Forum for additional help or discussion.
| Linux eBooks FREE Download | ||||
|
|
|
|
|