I had to work with epoch dates, that was older than the current, struggled a bit.
check this,
#!/bin/bash
dt1=`date`dt2=`date -d "$dt 1 hour ago"`
s1=`date -d "$dt1" +"%s"`
s2=`date -d "$dt2" +"%s"`
echo Now - $dt1
echo
echo "1 Hour Before -- $dt2 : $s2"
echo "Now -- $dt1 : $s1"
put whatever for 1 hour ago as (ago for old, just 1 hour for future, you can have day, minutes)
change dt1 for any date, here its current can be date by -d option
PS:
check good examples in the info pages, i checked this late.. :(
$info date examples
