07-15-2012
@prasson_ibm
Just re-read the history of your posts and not managed to deduce what precise Operating System (an unknown vintage of IBM AIX?), or what Shell you use, or whether you have a modern version of Perl installed.
You posted a question nearly a year ago about date arithmetic which petered out because there was insufficient base information for anybody to post a solution to match your evolving requirement (only last post mentions the expected output format).
In the custom of this forum, please post the base information about your computer software, some representative sample input data which contains the date data, an explanation of the process, and the expected matching sample output data. Please mention the volume of data which needs to be processed and quote real numbers (i.e. not words like "huge").
Please do find out whether you have the BSD variant of the date command installed, and whether you have Perl installed (what version?), and whether you have ksh93 installed (unlikely with AIX but not impossible).
Last edited by methyl; 07-15-2012 at 07:10 PM..
Reason: grammar
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LEARN ABOUT DEBIAN
chewmail
CHEWMAIL(1) User Contributed Perl Documentation CHEWMAIL(1)
NAME
chewmail - mail archiver
SYNOPSIS
chewmail [OPTIONS] <MAILBOX> ...
DESCRIPTION
chewmail is a program for archiving mail. It is inspired by the by the Python-based archivemail, but with more useful semantics. All mail
is archived to the mailbox specified with the --output-box switch, in mbox format. It can read mailboxes in mbox, Maildir and MH formats.
Internally, chewmail uses Mail::Box, so it support file names and URLs supported by that module.
OPTIONS
-o mailbox-format, --output-box=mailbox-format
The mailbox to archive messages to. The mailbox is run through the Date::Format module, so it supports all it's conversion specifiers.
The date and time is relative to the messages timestamp, or the current time if the timestamp is impossible to determine. A sample of
the conversion specifiers follows:
%% PERCENT
%b month abbr
%B month
%d numeric day of the month, with leading zeros (eg 01..31)
%e numeric day of the month, without leading zeros (eg 1..31)
%D MM/DD/YY
%G GPS week number (weeks since January 6, 1980)
%h month abbr
%H hour, 24 hour clock, leading 0's)
%I hour, 12 hour clock, leading 0's)
%j day of the year
%k hour
%l hour, 12 hour clock
%L month number, starting with 1
%m month number, starting with 01
%n NEWLINE
%o ornate day of month -- "1st", "2nd", "25th", etc.
%t TAB
%U week number, Sunday as first day of week
%w day of the week, numerically, Sunday == 0
%W week number, Monday as first day of week
%x date format: 11/19/94
%y year (2 digits)
%Y year (4 digits)
-d days-old, --days=days-old
Only archive messages older than than this many days.
-D date, --date=date
Only archive messages old than this date. The date can be any date understood by Perl's Date::Parse module.
-R, --only-read
Only archive messages that are marked seen or read.
--delete-immediately
Synchonize the mailboxes after every message is moved. This will be substantially slower but may provide better recovery for some mail-
box formats in the event of a crash.
--preserve-timestamp
Preserve the atime and mtime of the input mailbox. This only affects file-based mailboxes, such as mbox.
-n, --dry-run
Go through all the motions of archiving the mail, but don't actually change any mailboxes.
-v, --verbose
Output more informational messages. Use multiple times for more verbosity.
-q, --quiet
Don't output any messages other than error messages.
-V, --version
Print the version number then exit.
-h, --help
Print usage information then exit.
EXAMPLES
Archive two day old messages in inbox to inbox-old:
chewmail --days 2 -o inbox-old inbox
Archive read messages to a mailbox named the year-month of the message:
chewmail --only-read -o %Y-%m inbox
SEE ALSO
archivemail(1), Date::Parse, Date::Format, Mail::Box
AUTHOR
Eric Dorland <eric@kuroneko.ca>
perl v5.8.8 2006-08-15 CHEWMAIL(1)