Difference between two timestamps Post: 302130239

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Unix timestamps

Can someone help me with a Unix or perl script to convert the unix timestamps to human readable format? Any help will be highly appreciated...

2. UNIX for Dummies Questions & Answers

how to find difference of 2 timestamps in secs?

I have a requirement to find the time difference in second between 2 given time stamps. An example scenario is shown below: 30 Oct 11:42:29:992 DEBUG org.apache.commons.digester.Digester - New match='form-validation/global/validator' (IID=, TID=) 30 Oct 11:42:29:993 DEBUG...

3. Shell Programming and Scripting

timestamps

Hello! I have the following problem. I read a file using perl, each line of this file has the fllowing format. 14/4/2008 8:42:03 πμ|10800|306973223399|4917622951117|1||1259|1|126|492|433||19774859454$ Th first field is the timestamp and the second field is the offset in seconds. How can...

4. Shell Programming and Scripting

Difference between two timestamps Contd..

There was this thread earlier with the same name and the solution provided was excellent. Here is the solution to find diffrenc between two timestamp $ cat timestamp #! /usr/bin/ksh echo enter first time stamp read TIME1 echo enter second time stamp read TIME2 H1=${TIME1%:+()}...

5. AIX

How to find time difference between 2 timestamps?

HI All, can some one please help me how to fine the difference between two time stamps say a= Nov 10, 2009 9:21:25 AM b= Nov 10, 2009 10:21:25 AM I want to find difference between the a & b I googled and tried with some options but no luck. My OS is AIX

6. UNIX for Dummies Questions & Answers

Compare 2 timestamps

Hi, i have current timestamp, lets say "12:02:45" in an variable (var1) and another timestamp "08:30:00" fetched from table in another variable2 (var2). How do i compare 2 timestamps in unix shell scripting. if var 1 > var 2 then echo message. Thanks in advance.

7. Shell Programming and Scripting

Comparing two timestamps

Hi all!!, I'm using Ksh and working on Linux. I want to compare two timestamps, timestamp1 and timestamp2. Until, timestamp1 is lesser than timestamp2, i want to do something, lets say print something. The code i have written is: a=`date +%H:%M:%S` b=`date +%H:%M:%S -d" 1...

8. Shell Programming and Scripting

Calculate difference in timestamps based on unique column value

Hi Friends, Require a quick help to write the difference between 2 timestamps based on a unique column value: Input file: 08/23/2012 12:36:09,JOB_5340,08/23/2012 12:36:14,JOB_5340 08/23/2012 12:36:22,JOB_5350,08/23/2012 12:36:26,JOB_5350 08/23/2012 13:08:51,JOB_5360,08/23/2012...

9. Shell Programming and Scripting

Finding difference in 2 different timestamps

Legends, I have a requirement to run the script exactly after one hour of completion of dependent script. Eg: Script B should run after one hour on the completion of Script A. I got the time stamps using following variables. these scripts runs in autosys > DATE=`date +%H:%M` >...

10. Shell Programming and Scripting

Write with a look for timestamps

hello i'm using SOX to generate a spectrogram from a wave file with the command : #sox file.wav -n spectrogram is there a way to create a spectrogram using the same command but reading file timestamps instead of the namefile.wav , since name is changing every 4 hours? (it's saved with...

LEARN ABOUT REDHAT

pnmpsnr

pnmpsnr(1)						      General Commands Manual							pnmpsnr(1)

NAME

       pnmpsnr - compute the difference between two images (the PSNR)

SYNOPSIS

       pnmpsnr [pnmfile1] [pnmfile2]

DESCRIPTION

       Reads  two  PBM,  PGM, or PPM files, or PAM equivalents, as input.  Prints the peak signal-to-noise ratio (PSNR) difference between the two
       images.	This metric is typically used in image compression papers to rate the distortion between original and decoded image.

       If the inputs are PBM or PGM, pnmpsnr prints the PSNR of the luminance only.  Otherwise, it prints the separate PSNRs of the luminance, and
       chrominance (Cb and Cr) components of the colors.

       The  PSNR  of  a  given component is the ratio of the mean square difference of the component for the two images to the maximum mean square
       difference that can exist betwee any two images.  It is expressed as a decibel value.

       The mean square difference of a component for two images is the mean square difference of the component value, comparing  each  pixel  with
       the pixel in the same position of the other image.  For the purposes of this computation, components are normalized to the scale [0..1].

       The maximum mean square difference is identically 1.

       So the higher the PSNR, the closer the images are.  A luminance PSNR of 20 means the mean square difference of the luminances of the pixels
       is 100 times less than the maximum possible difference, i.e. 0.01.

SEE ALSO

       pnm(5)

								   04 March 2001							pnmpsnr(1)

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Unix timestamps

Discussion started by: hamsasal

2. UNIX for Dummies Questions & Answers

how to find difference of 2 timestamps in secs?

Discussion started by: Alecs

3. Shell Programming and Scripting

timestamps

Discussion started by: chriss_58

4. Shell Programming and Scripting

Difference between two timestamps Contd..

Discussion started by: Shellslave