11-12-2003
Hi,
You can use the script below, it will do more than you asked, but you can easly modify it... it was written by Tapani Tarvainen.
#! /usr/bin/ksh
# Get yesterday's date in YYYY-MM-DD format.
# With argument N in range 1..28 gets date N days before.
# Tapani Tarvainen January 2002
# This code is in the public domain.
OFFSET=${1:-1}
case $OFFSET in
*[!0-9]* | ???* | 3? | 29) print -u2 "Invalid input" ; exit 1;;
esac
eval `date "+day=%d; month=%m; year=%Y`
typeset -Z2 day month
typeset -Z4 year
# Subtract offset from day, if it goes below one use 'cal'
# to determine the number of days in the previous month.
day=$((day - OFFSET))
if (( day <= 0 )) ;then
month=$((month - 1))
if (( month == 0 )) ;then
year=$((year - 1))
month=12
fi
set -A days `cal $month $year`
xday=${days[$(( ${#days[*]}-1 ))]}
day=$((xday + day))
fi
print $year-$month-$day
print $month/$day/${year#??}
10 More Discussions You Might Find Interesting
1. UNIX for Dummies Questions & Answers
Hi Guys.
I am very new to UNIX.
I need to get yesterdays and tommorows date given todays date.
Which command and syntax do i use in basic UNIX shell.
Thanks. (2 Replies)
Discussion started by: magikminox
2 Replies
2. Shell Programming and Scripting
To get yesterays date, execute the command :
TZ=aaa24 date +%Y%m%d
Output format will be yyyymmdd (2 Replies)
Discussion started by: sujju1985
2 Replies
3. UNIX for Dummies Questions & Answers
Hi,
Was using date +%Y%j to get current julian date. Can anyone let me know how can I get y'day's julin date. Thx
Did check FAQ but couldn't find anything.
Thanks. (3 Replies)
Discussion started by: er_ashu
3 Replies
4. UNIX for Dummies Questions & Answers
I tried this and it works for the most part, but if the date is 20090301, it displays 20090300.
YESTERDAY=$((`date +%Y%m%d` -1)) (2 Replies)
Discussion started by: cards0622
2 Replies
5. Shell Programming and Scripting
hi All,
I have this sample text file - access.log:
Jan 18 21:34:29 root 209.151.232.70
Jan 18 21:34:40 root 209.151.232.70
Jan 18 21:34:43 root 209.151.232.70
Jan 18 21:34:56 root 209.151.232.70
Jan 18 21:35:10 root 209.151.232.70
Jan 18 21:35:23 root 209.151.232.70
Jan 18 21:36:04 root... (2 Replies)
Discussion started by: linuxgeek
2 Replies
6. Shell Programming and Scripting
Hey guys - i have a script (below) that searches for current files in a particular directory.
However i was wondering how to make it search for "yesterdays" file. For instance it looks for a file from yesterday and no older than that.
I used stat command to check for file information:
... (6 Replies)
Discussion started by: DallasT
6 Replies
7. Shell Programming and Scripting
Hi All,
Can anybody help me to get the yesterdays date in perl script.
My script is as below
#!/bin/perl -w
$yes=system("TZ=IST+24 date +%d-%m-%Y");
print "$yes\n";
script is writting the date but with 0
pls see the output below
#!/bin/perl -w
$yes=system("TZ=IST+24 date... (2 Replies)
Discussion started by: jam_prasanna
2 Replies
8. Shell Programming and Scripting
I am serching for a file created today like so:
TODAY=$(date +"%b-%d")
T_FILE=$(find /export/home/dan/ck/reports/t-status-t.txt-$TODAY-05-00-0?.csv)
The file it is searching for is titled:
/export/home/dan/ck/reports/t-status-t.txt-Jun-29-05-00-01
however, I when... (2 Replies)
Discussion started by: ther2000
2 Replies
9. Shell Programming and Scripting
Hi,
I have been trying to get the yesterdays date for the Input date I pass.
I know how to do for the current timestamp but how to do for the input date.
Is there any way I can convert to epoch time and do manipulations and back to human readable date?
Please help
Thanks
... (1 Reply)
Discussion started by: abhi1988sri
1 Replies
10. Shell Programming and Scripting
Hi All,
I need to find the date 19days back from the current date:
eg: if today is 17 March 2013
then the output should be : 26 Feb 2013
Can i do this using date command in Korn Shell?
And also if i need future 15 days date from current date, how to that?
Any help appreciated :)
... (3 Replies)
Discussion started by: Arun Mishra
3 Replies
LEARN ABOUT DEBIAN
calendar::simple
Calendar::Simple(3pm) User Contributed Perl Documentation Calendar::Simple(3pm)
NAME
Calendar::Simple - Perl extension to create simple calendars
SYNOPSIS
use Calendar::Simple;
my @curr = calendar; # get current month
my @this_sept = calendar(9); # get 9th month of current year
my @sept_2002 = calendar(9, 2002); # get 9th month of 2002
my @monday = calendar(9, 2002, 1); # get 9th month of 2002,
# weeks start on Monday
my @span = date_span(mon => 10, # returns span of dates
year => 2006,
begin => 15,
end => 28);
DESCRIPTION
A very simple module that exports one function called "calendar".
calendar
This function returns a data structure representing the dates in a month. The data structure returned is an array of array references. The
first level array represents the weeks in the month. The second level array contains the actual days. By default, each week starts on a
Sunday and the value in the array is the date of that day. Any days at the beginning of the first week or the end of the last week that are
from the previous or next month have the value "undef".
If the month or year parameters are omitted then the current month or year are assumed.
A third, optional parameter, start_day, allows you to set the day each week starts with, with the same values as localtime sets for wday
(namely, 0 for Sunday, 1 for Monday and so on).
date_span
This function returns a cur-down version of a month data structure which begins and ends on dates other than the first and last dates of
the month. Any weeks that fall completely outside of the date range are removed from the structure and any days within the remaining weeks
that fall outside of the date range are set to "undef".
As there are a number of parameters to this function, they are passed using a named parameter interface. The parameters are as follows:
year
The required year. Defaults to the current year if omitted.
mon The required month. Defaults to the current month if omitted.
begin
The first day of the required span. Defaults to the first if omitted.
end The last day of the required span. Defaults to the last day of the month if omitted.
start_day
Indicates the day of the week that each week starts with. This takes the same values as the optional third parameter to "calendar". The
default is 0 (for Sunday).
This function isn't exported by default, so in order to use it in your program you need to use the module like this:
use Calendar::Simple 'date_span';
EXAMPLE
A simple "cal" replacement would therefore look like this:
#!/usr/bin/perl -w
use strict;
use Calendar::Simple;
my @months = qw(January February March April May June July August
September October November December);
my $mon = shift || (localtime)[4] + 1;
my $yr = shift || (localtime)[5] + 1900;
my @month = calendar($mon, $yr);
print "
$months[$mon -1] $yr
";
print "Su Mo Tu We Th Fr Sa
";
foreach (@month) {
print map { $_ ? sprintf "%2d ", $_ : ' ' } @$_;
print "
";
}
A version of this example, called "pcal", is installed when you install this module.
Date Range
This module will make use of DateTime.pm if it is installed. By using DateTime.pm it can use any date that DateTime can represent. If
DateTime is not installed it uses Perl's built-in date handling and therefore can't deal with dates before 1970 and it will also have
problems with dates after 2038 on a 32-bit machine.
EXPORT
"calendar"
AUTHOR
Dave Cross <dave@mag-sol.com>
ACKNOWLEDGEMENTS
With thanks to Paul Mison <cpan@husk.org> for the start day patch.
COPYRIGHT
Copyright (C) 2002-2008, Magnum Solutions Ltd. All Rights Reserved.
LICENSE
This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO
perl, localtime, DateTime
perl v5.10.1 2010-04-02 Calendar::Simple(3pm)