Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: how to get the yesterdays date?
Top Forums Shell Programming and Scripting how to get the yesterdays date? Post 302438138 by pludi on Monday 19th of July 2010 02:43:57 AM
Old 07-19-2010
If only people started to read the docs before complaining that a function doesn't work as they want. Besides that, it's completely useless to call an external program for some functionality that Perl can provide by itself.

First of all, system() does not return the output of a command, but just runs it. What is returned is the exit status of the command, which is the 0 you're seeing. Second, simple date calculation in Perl:
Code:
$ cat date.pl
#!/usr/bin/perl

use strict;
use warnings;
use POSIX qw/strftime/;

my $time1 = time();
my $time2 = time - ( 24 * 60 * 60 );

my $yes1 = strftime '%d-%m-%Y', localtime($time1);
my $yes2 = strftime '%d-%m-%Y', localtime($time2);

print "$yes1\n";
print "$yes2\n";
$ perl date.pl
19-07-2010
18-07-2010

 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

yesterdays files

I am new to UNIX and I am trying to write a shell script. I want to be able to list all files that were created with yesterdays dates (APR 29 as an example) that are not 0 file size.Then in those files I want to look for the string 'Process Complete' and list all files that DONT have that string.... (8 Replies)
Discussion started by: tonydsam
8 Replies

2. UNIX for Dummies Questions & Answers

Get yesterdays date given todays date

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

3. Shell Programming and Scripting

using find to get all of yesterdays files

i tried to use "find" to get all of yesterdays files but missed something in the 24 hours logic. can anybody help me with this one? i thought that -daystart -atime 1 was enough but i got more files (2 Replies)
Discussion started by: progressdll
2 Replies

4. Shell Programming and Scripting

Korn Shell Script - Getting yesterdays date

I need to get yesterdays date in the format yyyymmdd I can get today's date simply enough - 20031112 Is there any way to substract 1 from this easily enough in korn shell script? It has to be korn shell and not perl (20 Replies)
Discussion started by: frustrated1
20 Replies

5. Shell Programming and Scripting

yesterdays date

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

6. UNIX for Dummies Questions & Answers

How to get yesterdays julian date

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

7. UNIX for Dummies Questions & Answers

Need to pull Yesterdays Date...

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

8. Shell Programming and Scripting

Filtering the yesterdays date from log files via script.

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

9. Shell Programming and Scripting

Get yesterdays Date for Input Date

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. UNIX for Dummies Questions & Answers

Using xargs To Delete Yesterdays File

Using the find command to find files in a directory and automatically delete files older than 24 hours find . -mtime +0 | grep file | xargs rm. Using the find man page but I can't seem to make it work for files that have the previous day's time stamp but are not 24 hours old. Is there a way for... (4 Replies)
Discussion started by: jimmyf
4 Replies

LEARN ABOUT DEBIAN

graphics::primitive::insets

Graphics::Primitive::Insets(3pm)			User Contributed Perl Documentation			  Graphics::Primitive::Insets(3pm)

NAME

       Graphics::Primitive::Insets - Space between things

DESCRIPTION

       Graphics::Primitive::Insets represents the amount of space that surrounds something.  This object can be used to represent either padding
       or margins (in the CSS sense, one being inside the bounding box, the other being outside)

SYNOPSIS

	 use Graphics::Primitive::Insets;

	 my $insets = Graphics::Primitive::Insets->new({
	   top	   => 5,
	   bottom  => 5,
	   left    => 5,
	   right   => 5
	 });

METHODS

   Constructor
       new Creates a new Graphics::Primitive::Insets.

   Instance Methods
       as_array
	   Return these insets as an array in the form of top, right, bottom and left.

       bottom
	   Set/Get the inset from the bottom.

       equal_to
	   Determine if these Insets are equal to another.

       left
	   Set/Get the inset from the left.

       right
	   Set/Get the inset from the right.

       top Set/Get the inset from the top.

       zero
	   Sets all the insets (top, left, bottom, right) to 0.

AUTHOR

       Cory Watson, "<gphat@cpan.org>"

SEE ALSO

       perl(1)

COPYRIGHT &; LICENSE
       Copyright 2008-2010 by Cory G Watson.

       This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.12.3							    2010-08-21					  Graphics::Primitive::Insets(3pm)
All times are GMT -4. The time now is 04:35 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy