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)
What i'm trying to do is to use grep to search through a few files for a selected daemon and only report on today's date.
I think I got it sorted apart from in the txt file the date has 2 gaps between the month and the day, and the way I have the date format only puts in one gap any help to get... (3 Replies)
Daily one file will dropped into this directory.
Directory: /opt/app/jt/drop
File name: XXXX_<timestamp>.dat.gz
I need to write a script which checks whether the file is dropped daily or not.
Any idea in the script how can we compare timestamp of the file to today's date?? (3 Replies)
Hi
I am very new to shell scripting and have written a script (below).
However the directory I am searching will contain a file with a .trn extension each day which I want to eliminate.
Each day the file extension overnight will change to trx, if this fails I want to know.
Basically what I... (2 Replies)
Hello,
I am quite new to unix/shell and want to write a script using bash which will process the files.
Basically i want to search files having name as "date+hostname+somestring.out"
i am using below variables and then will use them in find command :-
TODAY_DATE=$('date +%d')... (5 Replies)
Hi,
I want to compare today's date(DDMMYYYY) with yesterday(DDMMYYYY) from system date,if (today month = yesterday month) then execute alter query else do nothing.
The above requirement i want in Shell script(KSH)...
Can any one please help me?
Double post, continued here. (0 Replies)
I am trying to include a snippet in my script to check if the file created is having today's date.
eg: File name is : ABC.YYYYMMDD-nnn.log
The script should check if 'YYYYMMDD' in the above file name matches with today's date.
Can you please help me in achieving this.
Thanks in advance!! (5 Replies)
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)
I have reviewed many examples on-line about running another process (either PERL or shell command or a program), but do not find any usefull for my needs way. (Reviewed and not useful the system(), 'back ticks', exec() and open())
I would like to run another PERL-script from first one, not... (1 Reply)
Discussion started by: alex_5161
1 Replies
LEARN ABOUT DEBIAN
time::y2038
Time::y2038(3pm) User Contributed Perl Documentation Time::y2038(3pm)NAME
Time::y2038 - Versions of Perl's time functions which work beyond 2038
SYNOPSIS
use Time::y2038;
print scalar gmtime 2**52; # Sat Dec 6 03:48:16 142715360
DESCRIPTION
On many computers, Perl's time functions will not work past the year 2038. This is a design fault in the underlying C libraries Perl uses.
Time::y2038 provides replacements for those functions which will work accurately +/1 142 million years.
This only imports the functions into your namespace. To replace it everywhere, see Time::y2038::Everywhere.
Replaces the following functions:
gmtime()
See "gmtime" in perlfunc for details.
localtime()
See "localtime" in perlfunc for details.
timegm()
my $time = timegm($sec, $min, $hour, $month_day, $month, $year);
The inverse of "gmtime()", takes a date and returns the coorsponding $time (number of seconds since Midnight, January 1st, 1970 GMT). All
values are the same as "gmtime()" so $month is 0..11 (January is 0) and the $year is years since 1900 (2008 is 108).
# June 4, 1906 03:02:01 GMT
my $time = timegm(1, 2, 3, 4, 5, 6);
timegm() can take two additional arguments which are always ignored. This lets you feed the results from gmtime() back into timegm()
without having to strip the arguments off.
The following is always true:
timegm(gmtime($time)) == $time;
timelocal()
my $time = timelocal($sec, $min, $hour, $mday, $month, $year);
my $time = timelocal($sec, $min, $hour, $mday, $month, $year, $wday, $yday, $isdst);
Like "timegm()", but interprets the date in the current time zone.
"timelocal()" will normally figure out if daylight savings time is in effect, but if $isdst is given this will override that check. This
is mostly useful to resolve ambiguous times around "fall back" when the hour between 1am and 2am occurs twice.
# Sun Nov 4 00:59:59 2007
print timelocal(59, 59, 0, 4, 10, 107); # 1194163199
# Sun Nov 4 01:00:00 2007 DST, one second later
print timelocal(0, 0, 1, 4, 10, 107, undef, undef, 1); # 1194163200
# Sun Nov 4 01:00:00 2007 no DST, one hour later
print timelocal(0, 0, 1, 4, 10, 107, undef, undef, 0); # 1194166800
$wday and $yday are ignored. They are only there for compatibility with the return value of "localtime()".
LIMITATIONS
The safe range of times is +/ 2**52 (about 142 million years).
Although the underlying time library can handle times from -2**63 to 2**63-1 (about +/- 292 billion years) Perl uses floating point numbers
internally and so accuracy degrates after 2**52.
BUGS & FEEDBACK
See http://rt.cpan.org/Dist/Display.html?Queue=Time-y2038 to report and view bugs.
If you like the module, please drop the author an email.
The latest version of this module can be found at http://y2038.googlecode.com/ and the repository is at
http://y2038.googlecode.com/svn/trunk/ in perl/Time-y2038. You have to check out the whole repository because there are symlinks.
AUTHOR
Michael G Schwern <schwern@pobox.com>
LICENSE & COPYRIGHT
Copyright 2008-2010 Michael G Schwern
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
See http://www.perl.com/perl/misc/Artistic.html
SEE ALSO
Time::y2038::Everywhere overrides localtime() and gmtime() across the whole program.
The y2038 project at http://y2038.googlecode.com/
<http://xkcd.com/376/>
perl v5.14.2 2011-11-15 Time::y2038(3pm)