Sponsored Content
Full Discussion: General Purpose Date Script
Top Forums UNIX for Beginners Questions & Answers General Purpose Date Script Post 302868049 by Corona688 on Friday 25th of October 2013 05:33:57 PM
Old 10-25-2013
Bug noted, thank you a lot, I had --date "something" when I should have done --date="something".

Thanks for reminding me about the +syntax feature, which I'd planned but forgotten.

Date math is not hard here, I am letting mktime handle absolutely everything tricky. I do not need to know when the next leap year is, I subtract 1 from the 'year' value and let mktime decide what that is.

Yes yes I know that Perl has about 37 different date modules I could be using. But if I'm going to tell someone to install 'Perl::MyFavoriteDateModule' I might as well just tell them to install GNU date. The whole point is to not do that, (and to show elegant Perl code is possible without including the kitchen sink).

Some of those tests are just weird though. I have no idea how you got 23 hours from subtracting days, it certainly doesn't happen here. I may have done something odd with a last-minute fix when I posted. [edit] Now I know. It happened because of the --date vs --date= problem. Perl does strange things when you do arithmetic on strings.

Anyway, I'll incorporate your suggestions and repost. Thanks again. [edit] Version 2 is now in the OP.

Last edited by Corona688; 10-25-2013 at 06:57 PM..
 

8 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Looking for a general purpose System Monitor

Does anyone have any scripts or suggestions on a general purpose Unix/Linux monitoring tool? (5 Replies)
Discussion started by: darthur
5 Replies

2. UNIX for Dummies Questions & Answers

whats the purpose of the following script?

whats the purpose of the following script? who could run it? To what is the script refering that exceeds 75%? The mailbox? What does sed 's/%//' do? (1 Reply)
Discussion started by: vrn
1 Replies

3. Shell Programming and Scripting

General Q: how to run/schedule a php script from cron jobs maybe via bash from shell?

Status quo is, within a web application, which is coded completely in php (not by me, I dont know php), I have to fill out several fields, and execute it manually by clicking the "go" button in my browser, several times a day. Thats because: The script itself pulls data (textfiles) from a... (3 Replies)
Discussion started by: lowmaster
3 Replies

4. Shell Programming and Scripting

awk (?) help or just general script

I have two files (___ represents blanks) Foo1 1000 345 456 1001 876 908 1002 ___ 786 1003 643 908 1004 345 234 and Foo2 1000 345 1001 876 1002 111 1003 643 1004 345 (3 Replies)
Discussion started by: garethsays
3 Replies

5. Shell Programming and Scripting

script to fill up disk space for testing purpose

Hello everyone I am new to this forum I am working on a project and needed a test script to fill up a disk partition /tmp/data to see how the program fails. The system I am working on is a redhat 5.3. Is there anything out there? Thanks. (10 Replies)
Discussion started by: dp100022
10 Replies

6. UNIX for Dummies Questions & Answers

Purpose of - (hypen) in script or command line

Hi, I am new for unix and I am following ABS guide. What is the purpose of - (hypen ) in the below command and What it will do in this?. Can anyone explain it in detail. Rest of the things in the below command I understood somewhat. (cd /source/directory && tar cf - . ) | (cd /dest/directory &&... (1 Reply)
Discussion started by: gwgreen1
1 Replies

7. Shell Programming and Scripting

Script to determine Date,TotalFile,total size of file based on date

I have file listed like below -rw-r--r--+ 1 test test 17M Nov 26 14:43 test1.gz -rw-r--r--+ 1 test test 0 Nov 26 14:44 test2.gz -rw-r--r--+ 1 test test 0 Nov 27 10:41 test3.gz -rw-r--r--+ 1 test test 244K Nov 27 10:41 test4.gz -rw-r--r--+ 1 test test 17M Nov 27 10:41 test5.gz I... (5 Replies)
Discussion started by: krish2014
5 Replies

8. UNIX for Beginners Questions & Answers

General Purpose XML Processing

I've been kicking this around for a while now, I might as well post it here. v0.0.9, now properly supporting self-closing tags. v0.0.8, an important quoting fix and a minor change which should handle special <? <!-- etc. tags without seizing up as often. Otherwise the code hasn't changed much.... (6 Replies)
Discussion started by: Corona688
6 Replies
DM_DATE(1)						User Contributed Perl Documentation						DM_DATE(1)

NAME
dm_date - print out the system date and time SYNOPSIS
This performs the same operation as the unix 'date' command, but using the Date::Manip module. dm_date [OPTION]... [+FORMAT] DESCRIPTION
This displays information about the current system time, or some other time. Options are: -h, --help Print online help. -d STRING, --date=STRING Display time described by STRING. STRING can be any string which can be parsed by Date::Manip. Please refer to the Date::Manip::Date documentation for details. -f DATEFILE, --file=DATEFILE This reads each line in DATEFILE, and extracts a date from it and prints out the information. Blank lines and lines starting with a pound (#) are ignored. Lines not containing a valid date are also ignored. -r FILE, --reference=FILE Displays the last modification time of FILE. -R, --rfc-2822 Displayc the date and time in RFC 2822 format. Example: Mon, 07 Aug 2006 12:34:56 -0600 -u, --utc, --universal Converts the date to UT (GMT) and prints out the information. Only one of -d, -f, or -r should be included. If more than one is included, the first one from the list (-d, -f, -r) is used and any other is ignored. The format string starts with a plus (+) and contains any of the format directives described in Date::Manip::Date. KNOWN BUGS
None known. BUGS AND QUESTIONS
Please refer to the Date::Manip::Problems documentation for information on submitting bug reports or questions to the author. SEE ALSO
Date::Manip::Date LICENSE
This script is free software; you can redistribute it and/or modify it under the same terms as Perl itself. AUTHOR
Sullivan Beck (sbeck@cpan.org) perl v5.16.3 2014-06-09 DM_DATE(1)
All times are GMT -4. The time now is 02:49 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy