Sponsored Content
Top Forums UNIX for Beginners Questions & Answers Compare Date to today's date in shell script Post 303043890 by RudiC on Monday 10th of February 2020 11:24:53 AM
Old 02-10-2020
Unfortunately, date does not immediately recognize your format. Depending on your bash and date versions, the request can be fulfilled in two - admittedly a bit complex - lines:


Code:
readarray -td/ DATARR <<< "10/02/2020"
if (( ( ( $(date +%s) - $(date -d"${DATARR[2]}/${DATARR[1]}/${DATARR[0]}" +%s)  ) / 86400 ) > 2 )); then printf "greater than 2 days\n"; else printf "less or equal 2 days\n"; fi
 less or equal 2 days

The readarr builtin can read your file.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

compare today's date with date in a file

Hi I am very new to scripting, Can someone show me how to (in unix shell script) compare the system's date with a date in a file. The requirement is to somehow open this file (which will only have a date in it) and compare it with today's date. If they are equal execute a procedure below but if... (4 Replies)
Discussion started by: siog
4 Replies

2. Shell Programming and Scripting

Past date display ( today - N) in shell

Hi, Any idea to get display of date - n ( n=1,2,3,4 etc) ? For example , dtoudt will easily execute by dtoudt -3 and result is >dtoudt -3 1234852529 Date 2009-2-17 time 14:35:29 day 47 How to get it display in 20090217 instead ? Maybe you have other suggestion to display date... (0 Replies)
Discussion started by: rauphelhunter
0 Replies

3. Shell Programming and Scripting

Calculate 30/31 days from today date script

Hi Guys, I was working some time ago n was in need to calculate date 30/31 days from today including Feb (Leap yr stuff). Today date is variable depending on day of execution of script. I tried searching but was not able to get exactly what I needed....So at that I time I implemented by my own... (3 Replies)
Discussion started by: coolgoose85
3 Replies

4. Shell Programming and Scripting

Shell Script to compare files, check current date and count

Hello - I have written the following basic shell script to count files, compare files and look for a particular strings in a file. Problem 1: How do I define more than 1 file location? #!/bin/bash #this is a test script FILES=$(ls /home/student/bin/dir1, home/student/bin/dir2)... (0 Replies)
Discussion started by: DallasT
0 Replies

5. UNIX for Dummies Questions & Answers

Shell Scripts - shows today’s date and time in a better format than ‘date’ (Uses positional paramete

Hello, I am trying to show today's date and time in a better format than ‘date' (Using positional parameters). I found a command mktime and am wondering if this is the best command to use or will this also show me the time elapse since 1/30/70? Any help would be greatly appreciated, Thanks... (3 Replies)
Discussion started by: citizencro
3 Replies

6. Shell Programming and Scripting

Shell Scripting: Copy Files with Today's date

I was wondering the best way about finding files that were created today and copy them to a directory (grep ?). There can be multiple files for todays date or none. I am looking to copy all of the .lis files for todays date. I may need to modify the filename to include todays date but for the... (4 Replies)
Discussion started by: smkremer
4 Replies

7. Shell Programming and Scripting

[Solved] Replace yesterday date with today's date except from the first line

Hello, I have a file like this: 2012112920121130 12345620121130msABowwiqiq 34477420121129amABamauee e7748420121130ehABeheheei in case the content of the file has the date of yesterday within the lines containing pattern AB this should be replaced by the current date. But if I use... (3 Replies)
Discussion started by: Lilu_CK
3 Replies

8. Shell Programming and Scripting

UNIX date fuction - how to deduct days from today's date

Hi, One of my Unix scripts needs to look for files coming in on Fridays. This script runs on Mondays. $date +"%y%m%d" will give me today's date. How can I get previous Friday's date.. can I do "today's date minus 3 days" to get Friday's date? If not, then any other way?? Name of the files is... (4 Replies)
Discussion started by: juzz4fun
4 Replies

9. Shell Programming and Scripting

Need to add a date column (today's date) in file

Hi I have file with number status and date1 and date1 field, want add a column today between column date1 and date2. file1.txt number status date1 date2 ===== ==== === ===== 34567 open 27/06/13 28/06/13 45678 open 27/06/13 28/06/13 43567 open 27/06/13 28/06/13 ... (1 Reply)
Discussion started by: vijay_rajni
1 Replies

10. Shell Programming and Scripting

Shell script to compare two files of todays date and yesterday's date

hi all, How to compare two files whether they are same are not...? like i had my input files as 20141201_file.txt and 20141130_file2.txt how to compare the above files based on date .. like todays file and yesterdays file...? (4 Replies)
Discussion started by: hemanthsaikumar
4 Replies
Template::Plugin::Date(3)				User Contributed Perl Documentation				 Template::Plugin::Date(3)

NAME
Template::Plugin::Date - Plugin to generate formatted date strings SYNOPSIS
[% USE date %] # use current time and default format [% date.format %] # specify time as seconds since epoch # or as a 'h:m:s d-m-y' or 'y-m-d h:m:s' string [% date.format(960973980) %] [% date.format('4:20:36 21/12/2000') %] [% date.format('2000/12/21 4:20:36') %] # specify format [% date.format(mytime, '%H:%M:%S') %] # specify locale [% date.format(date.now, '%a %d %b %y', 'en_GB') %] # named parameters [% date.format(mytime, format = '%H:%M:%S') %] [% date.format(locale = 'en_GB') %] [% date.format(time = date.now, format = '%H:%M:%S', locale = 'en_GB) %] # specify default format to plugin [% USE date(format = '%H:%M:%S', locale = 'de_DE') %] [% date.format %] ... DESCRIPTION
The "Date" plugin provides an easy way to generate formatted time and date strings by delegating to the "POSIX" "strftime()" routine. The plugin can be loaded via the familiar USE directive. [% USE date %] This creates a plugin object with the default name of '"date"'. An alternate name can be specified as such: [% USE myname = date %] The plugin provides the "format()" method which accepts a time value, a format string and a locale name. All of these parameters are optional with the current system time, default format ('"%H:%M:%S %d-%b-%Y"') and current locale being used respectively, if undefined. Default values for the time, format and/or locale may be specified as named parameters in the "USE" directive. [% USE date(format = '%a %d-%b-%Y', locale = 'fr_FR') %] When called without any parameters, the "format()" method returns a string representing the current system time, formatted by "strftime()" according to the default format and for the default locale (which may not be the current one, if locale is set in the "USE" directive). [% date.format %] The plugin allows a time/date to be specified as seconds since the epoch, as is returned by "time()". File last modified: [% date.format(filemod_time) %] The time/date can also be specified as a string of the form "h:m:s d/m/y" or "y/m/d h:m:s". Any of the characters : / - or space may be used to delimit fields. [% USE day = date(format => '%A', locale => 'en_GB') %] [% day.format('4:20:00 9-13-2000') %] Output: Tuesday A format string can also be passed to the "format()" method, and a locale specification may follow that. [% date.format(filemod, '%d-%b-%Y') %] [% date.format(filemod, '%d-%b-%Y', 'en_GB') %] A fourth parameter allows you to force output in GMT, in the case of seconds-since-the-epoch input: [% date.format(filemod, '%d-%b-%Y', 'en_GB', 1) %] Note that in this case, if the local time is not GMT, then also specifying '%Z' (time zone) in the format parameter will lead to an extremely misleading result. Any or all of these parameters may be named. Positional parameters should always be in the order "($time, $format, $locale)". [% date.format(format => '%H:%M:%S') %] [% date.format(time => filemod, format => '%H:%M:%S') %] [% date.format(mytime, format => '%H:%M:%S') %] [% date.format(mytime, format => '%H:%M:%S', locale => 'fr_FR') %] [% date.format(mytime, format => '%H:%M:%S', gmt => 1) %] ...etc... The "now()" method returns the current system time in seconds since the epoch. [% date.format(date.now, '%A') %] The "calc()" method can be used to create an interface to the "Date::Calc" module (if installed on your system). [% calc = date.calc %] [% calc.Monday_of_Week(22, 2001).join('/') %] The "manip()" method can be used to create an interface to the "Date::Manip" module (if installed on your system). [% manip = date.manip %] [% manip.UnixDate("Noon Yesterday","%Y %b %d %H:%M") %] AUTHORS
Thierry-Michel Barral wrote the original plugin. Andy Wardley provided some minor fixups/enhancements, a test script and documentation. Mark D. Mills cloned "Date::Manip" from the "Date::Calc" sub-plugin. COPYRIGHT
Copyright (C) 2000-2007 Thierry-Michel Barral, Andy Wardley. This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. SEE ALSO
Template::Plugin, POSIX perl v5.16.3 2012-01-13 Template::Plugin::Date(3)
All times are GMT -4. The time now is 10:17 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy