How to add and extra hour to the start time


 
Thread Tools Search this Thread
Operating Systems Linux How to add and extra hour to the start time
# 8  
Old 10-17-2008
yes its avialbel but dont know when i am trying to run the same command its showing as stat not found , and we are using red hat linux .........(as a general info)

so can u suggest me any other way to solve this ? probelm
# 9  
Old 10-17-2008
You can solve this problem without intermediate files and without using the stat utility by simple calculation. I will sketch out a solution which will not cover for situations where the intervall is going over midnight, but even this could easily built in:

1. Find out the number of seconds passed since midnight. This is easily done using the "date" command and applying the appropriate format. I have no Linux system available, so you will have to look up the man page yourself, but the following details can surely be specified: Number of hours since midnight, number of minutes in the current hour, number of seconds in the current minute. Add that all: hours * 3600 + minutes * 60 + seconds.

Example: 10:15:03 10*3600 + 15*60 + 3 = 36000 + 900 + 3 = 36903

2. Add to that 3600 (1 hour in seconds) to get the time of termination.

3. Get the number of passed seconds since midnight the same way as in 1. Compare this to your termination number and if its greater than that the hour has passed.

I hope this helps.

bakunin
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to convert 24 hour time to 12 hour timing?

Hi friends, I want to convert 24 hour timing to 12 hour please help me... my data file looks like this.. 13-Nov-2011 13:27:36 15.32044 72.68502 13-Nov-2011 12:08:31 15.31291 72.69807 16-Nov-2011 01:16:54 15.30844 72.74028 15-Nov-2011 20:09:25 15.35096 ... (13 Replies)
Discussion started by: nex_asp
13 Replies

2. Shell Programming and Scripting

add one hour to each time field

Hello All, Is there any *easy* and efficient way to add "one hour" to few fields in a file? . I have done this using a python script and it has hit with performance issues. I have around 200mi of records, which I need to modify and send across in one hour. sample input: '2012-10-17... (2 Replies)
Discussion started by: panyam
2 Replies

3. AIX

crontab 1 hour off from current time

This is a new one on me. We upgraded a system from AIX 5.3 TL 7 to 6.1 TL 7 yesterday. The app people notified us that their cron jobs weren't running at the right time. So I made a test cron entry and here's what I've found: # crontab -l * * * * * /usr/bin/date > /tmp/test.log 2>&1 # cat... (2 Replies)
Discussion started by: homeyjoe
2 Replies

4. Shell Programming and Scripting

Incrementing a time by one hour issues

Hi all, I need your help to increment a time by one hour. The difficulty is the time is in a string format and not a value cat file | awk '{print $1,$2}' 09/02/2011 20:11 09/03/2011 20:11 I want to change the time to be as follows 09/02/2011 21:11 or even 09/02/2011 20:21 Can... (2 Replies)
Discussion started by: Junes
2 Replies

5. UNIX for Dummies Questions & Answers

How to add an hour or a minute to a time?

Hi, The timestamp is June 06 2011 11:05AM i need 2 results. first, an hour added to it, June 06 2011 12:05AM second, a minute added to it, June 06 2011 11:06AM How can i do this? Also when it reaches 12:59, it needs to start from 1 again without giving the output as 13:00. it... (17 Replies)
Discussion started by: irudayaraj
17 Replies

6. Shell Programming and Scripting

Doing math on 24 hour time base

I'm trying to do some simple math on a 24 hour time base. The time is in the format of HM (HoursMinutes) For example: 2330 #23:30 1800 #18:00 730 #07:30 my problem is with the single-digit hours. If the time is 2200, I use this code: baseTime=2200 minutes=${baseTime:2:3}... (3 Replies)
Discussion started by: jondecker76
3 Replies

7. UNIX for Dummies Questions & Answers

How do i set time in 24 hour format?

Currently whenever i run date command output is shown like Mon Apr 12 05:17:21 IST 2010 When its 17:17 Here. How would i change it so that it should show. Mon Apr 12 17:17:21 IST 2010 (8 Replies)
Discussion started by: pinga123
8 Replies

8. AIX

Time getting reduced by 1 hour

I am setting TZ=EST5EDT,M3.2.0/02:00:00,M11.1.0/02:00:00 Then Setting the date to Mar 14 01:40 EST date 0314014010 Sun Mar 14 01:40:36 EDT 2010 Note that it show it EST. According to my TZ variable 01:40 Should be in EST only. On executing date command once again it shows date Sun Mar... (4 Replies)
Discussion started by: januuj23
4 Replies

9. Shell Programming and Scripting

Start program in background (or start crontab ahead of time)

Hey! I'm working on a script that will add a user, create some configfiles, and add a crontab for the user. The crontab looks like the following: @reboot /home/user/program config.conf & I would like for this process to start at the end of my script under the corresponding username by... (0 Replies)
Discussion started by: noratx
0 Replies

10. Shell Programming and Scripting

getting hour minus the current time

Can some one help me getting last hour of the current time with date command in a script. (7 Replies)
Discussion started by: shehzad_m
7 Replies
Login or Register to Ask a Question