[bash] unix time to date format

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-----------------------
function print_date_by_unix_time
{
  LOCALE="+9hour"
  date -d "1970-01-01 $1 seconds ${LOCALE}"
}
-----------------------

 Output Example
# print_date_by_unix_time `date +%s`

Fri Jan 29 20:40:23 KST 2016
# print_date_by_unix_time 1354067587
Wed Nov 28 10:53:07 KST 2012

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