Sponsored Content
Full Discussion: Date Substraction
Top Forums UNIX for Dummies Questions & Answers Date Substraction Post 1737 by AC on Wednesday 28th of March 2001 02:10:15 AM
Old 03-28-2001
Question

In Unix script, how to get a "date - 1" ie, yesterday?
 

9 More Discussions You Might Find Interesting

1. Solaris

Substraction in bash

Hi all, I have in one script something like this: FIRSTOCC=`grep -n ORA- alert_bill2.log |tail -"$ROWS"|head -1|cut -d: -f1` TOTAL=`more alert*|wc -l` DIFFERENCE=`$TOTAL-$FIRSTOCC` echo Total lines in alert_bill = $TOTAL echo $DIFFERENCE How do I make this substraction work? Thk (2 Replies)
Discussion started by: mclaudiu
2 Replies

2. Shell Programming and Scripting

Date One Week Ago From Given Date, Not From Current Date

Hi all, I've used various scripts in the past to work out the date last week from the current date, however I now have a need to work out the date 1 week from a given date. So for example, if I have a date of the 23rd July 2010, I would like a script that can work out that one week back was... (4 Replies)
Discussion started by: Donkey25
4 Replies

3. Shell Programming and Scripting

date substraction

hello i have obtained the current date .. current_date=date "+%m/%d%y" and i have another date ,stored in my log file which i have already retrieved. i want to store the subtraction in a varible called diff. diff=log_date - currentdate ex: log_date=01/28/11 current_date=... (3 Replies)
Discussion started by: urfrnddpk
3 Replies

4. Shell Programming and Scripting

Problem in algebraic substraction

my code is like this count=`cat /filecount.txt | tail -1 |head -1| awk '{print $1}'` ###file is having value 264 #### echo "actual count = $count" exact_count=`expr $value \* 24` echo "exact_count= $exact_count" diff=`expr "$exact_count" - "$count"` a= exact_count - count ... (8 Replies)
Discussion started by: sagar_1986
8 Replies

5. Shell Programming and Scripting

Converting a date to friday date and finding Min/Max date

Dear all, I have 2 questions. I have a file with many rows which has date of the format YYYYMMDD. 1. I need to change the date to that weeks friday date(Ex: 20120716(monday) to 20120720). Satuday/Sunday has to be changed to next week friday date too. 2. After converting the date to... (10 Replies)
Discussion started by: 2001.arun
10 Replies

6. Shell Programming and Scripting

Substraction in shell scripting

Hello friends, I am new on linux, i am facing issues on below script. #!/bin/sh current=1355147377 echo $current last_modified=1354537347 echo $last_modified DIFF='expr ($current - $last_modified)' echo $DIFF Please view this code tag video for how to use code tags when posting... (8 Replies)
Discussion started by: sanjay833i
8 Replies

7. Shell Programming and Scripting

Substraction of matching lines from a file.

I have 2 files: file1.txt contains /html/mybook/Charts/143712/reptiles.pdf /html/mybook/Charts/198459/spices.pdf /html/mybook/Charts/198459/fresh_nuts.pdf /html/mybook/Charts/123457/dome_anim.pdf /html/mybook/Charts/123457/vegetables.pdf /html/content/3DInteractive/174091/CSPSGGB.html ... (6 Replies)
Discussion started by: Jojan Paul
6 Replies

8. Shell Programming and Scripting

Date: invalid date trying to set Linux date in specific format

i try to set linux date & time in specific format but it keep giving me error Example : date "+%d-%m-%C%y %H:%M:%S" -d "19-01-2017 00:05:01" or date +"%d-%m-%C%y %H:%M:%S" -d "19-01-2017 00:05:01" keep giving me this error : date: invalid date ‘19-01-2017 00:05:01' Please use CODE tags... (7 Replies)
Discussion started by: umen
7 Replies

9. UNIX for Beginners Questions & Answers

Compare date in .txt with system date and remove if it's lesser than system date

Can someone help me with the code wherein there is a file f1.txt with different column and 34 column have expiry date and I need to get that and compare with system date and if expiry date is <system date remove those rows and other rows should be moved to new file f2.txt . I don't want to delete... (2 Replies)
Discussion started by: Stuti
2 Replies
Weather::Com::DateTime(3pm)				User Contributed Perl Documentation			       Weather::Com::DateTime(3pm)

NAME
Weather::Com::DateTime - date and time class SYNOPSIS
#!/usr/bin/perl -w use Weather::Com::DateTime; my $gmt_offset = 1; # e.g. for Germany in winter my $datetime = Weather::Com::DateTime->new($gmt_offset); $datetime->set_lsup('02/25/05 11:21 PM Local Time'); print "This is the date '02/25/05 11:21 PM' in Germany: "; print "Epoc: ", $datetime->epoc(), " "; print "GMT (UTC): ". gmtime($datetime->epoc()). " "; print "My local time: ". localtime($datetime->epoc()). " "; print "And finally German time: ", $datetime->time(), " o'clock at ", $datetime->date(), " "; DESCRIPTION
Weather::Com::DateTime objects are used to encapsulate a date or time provided by the OO interface (e.g. localtime, sunrise, sunset, etc.). This is done because there are many ways to use a date or time and to present it in your programs using Weather::Com. This class provides some predefined formats for date and time but also enables you to easily define your own ones. These objects always represent the local time of a Weather::Com::Location object. That is, if you have a location object for New York City and your server running the weather script is located in Los Angeles, for example, this line print "Sunrise at: ", $location->sunrise()->time(), " "; will print the time of sunrise (in 24h format) in EST and not corresponding to the timezone of Los Angeles! If you'd like to now what this is in GMT you could call print "Sunrise at: ". gmtime($location->sunrise()->epoc()). " "; or if you want to know when the sun rises at the location in your servers local time than just call print "Sunrise at: ". localtime($location->sunrise()->epoc()). " "; There are two ways to get your own date or time format: 1. You use the "formatted()" method and provide a format string to it. 2. If you'd like to define your own "date()" or "time()" method, simply change the corresponding methods. What you can change in which way without destroying the whole class, is described in section INTERFACE. CONSTRUCTOR
You usually would not construct an object of this class yourself. This is implicitely done when you call one of the OO interfaces date or time methods. The constructor can take a GMT offset in positive or negative hours. If one calls the constructor without any GMT offset, we assume you want a GMT object. METHODS
epoc(epoc seconds) With this method you can set the date and time using epocs (GMT) directly. It returns the currently set epoc seconds (GMT). formatted(format) This method returns a date or time formatted in the way you ask for and corresponding to the local time of the parent object. The "format" you provide to this method has to be a valid Time::Format format. For details please refer to Time::Format. set_date(date) With this method one can set the date of the object using an input format like "Feb 13" which is the 13th of february of the current year. Using this method, the time is set to 00:00. The year is the current one. set_time(time) With this method one can set the time of the object using an input format like "8:30 AM". The date is set to the current date of the host the script is running on. set_lsup(lsup) With this method one can set the date of the object using the weather.com's special last update format that is like "2/12/05 4:50 PM Local Time". date() Returns the date in the format "1. February 2005". time() Returns the time in the format "22:15". time_ampm() Returns the time in the format "10:15 PM". weekday() Returns the day of week with like "Wednesday". day() Returns the day in month. month() Returns the name of the month. mon() Returns the number of the month year() Returns the year (4 digits). AUTHOR
Thomas Schnuecker, <thomas@schnuecker.de> COPYRIGHT AND LICENSE
Copyright (C) 2004-2007 by Thomas Schnuecker This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. The data provided by weather.com and made accessible by this OO interface can be used for free under special terms. Please have a look at the application programming guide of weather.com (<http://www.weather.com/services/xmloap.html>)! perl v5.8.8 2007-07-09 Weather::Com::DateTime(3pm)
All times are GMT -4. The time now is 06:03 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy