Creating date range for next few hours

We often get cases when we need date ranges to be generated, so it can take care of hours, days, months properly.

Script: file dategen.sh

#!/bin/bash
_g_DT="$1"
_g_TM="$2"

_DT=`date -d "$_g_DT $_g_TM" +"%Y%m%d %H"`

echo "For: $_DT"

for i in `seq 0 5`; do
      _DT_gen=`date -d "$_DT +$i hours" +"%Y-%m-%dT%H:00"`
      echo -e "\t$_DT_gen"
done

E.g with Sep 30, at 23 hours

bash dategen.sh "2014-09-30" "23"


For: 20140930 23
 2014-09-30T23:00
 2014-10-01T00:00
 2014-10-01T01:00
 2014-10-01T02:00
 2014-10-01T03:00
 2014-10-01T04:00