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Additional time to system time

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# 1  
Old 06-11-2013
Additional time to system time
Hi All,

Is there any command to add additional time to date command. I need to add 5 hours to the present system time. I am getting the time by using date command.

Code:
WORKFLOW_START_TIME=`date +%m/%d/%Y\ %H:%M:%S`

Thanks
# 2  
Old 06-11-2013
Horrible, but it works...
Code:
WORKFLOW_START_TIME=$(perl -e '@t= localtime(time() + (5 *(60 * 60 )));printf "%02d/%02d/%04d %02d:%02d:%02d\n", $t[4] + 1, $t[3],$t[5]+1900, @t[2,1,0]')

This User Gave Thanks to Skrynesaver For This Post:
nag_sathi
# 3  
Old 06-11-2013
Depending on what OS and date version you have, this might work:
Code:
date -d"+5hours" +%H:%M:%S

Last edited by RudiC; 06-11-2013 at 12:06 PM.. Reason: typo
# 4  
Old 06-11-2013
Using Korn Shell 93:
Code:
#!/bin/ksh93

printf "%(%m/%d/%Y %H:%M:%S)T\n" "exactly next 5 hour"

# 5  
Old 06-11-2013
Hi RudiC,

Its not working,

Code:
$ date
Tue Jun 11 15:31:03 GMT 2013
$ date -d"+5hours" +%H:%M:%S
date: illegal option -- d
date: illegal option -- +
date: illegal option -- 5
date: illegal option -- h
date: illegal option -- o
date: illegal option -- r
date: illegal option -- s
usage:  date [-u] mmddHHMM[[cc]yy][.SS]
        date [-u] [+format]
        date -a [-]sss[.fff]
$
$ uname
SunOS

Shell -

Code:
$ echo $0
-ksh

Last edited by nag_sathi; 06-11-2013 at 12:33 PM.. Reason: added shell type
# 6  
Old 06-11-2013
date -d is a feature so obvious and handy you'd think it's everywhere, but isn't. It's a GNU/Linux thing mostly.
# 7  
Old 06-11-2013
Another perl approach:
Code:
WORKFLOW_START_TIME=$(perl -e 'use POSIX qw(strftime); print strftime "%m/%d/%Y %H:%M:%S",localtime(time()+ 3600*5);')
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