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Full Discussion: Time difference
Top Forums Shell Programming and Scripting Time difference Post 302430274 by Scrutinizer on Thursday 17th of June 2010 04:28:34 AM
Old 06-17-2010
Hi, if you have GNU date you can do this to print dates up to 2 days ago:
Code:
while IFS="$IFS[]:/" read c1 c2 c3 day mon year hour min sec tz; do
  if [ $(date -d "2 days ago" +%s) -le $(date -d "$day $mon $year $hour:$min:$sec +$tz" +%s) ] ; then
    printf "%s\t%s\t%s\t[%s\t%s]\n" $c1 $c2 $c3 $(TZ=PST8PDT date -d "$day $mon $year $hour:$min:$sec +$tz" "+%d/%b/%Y:%H:%M:%S %z")
  fi
done<infile

output:
Code:
abc     -       -       [15/Jun/2010:23:30:04   -0700]
efg     -       -       [17/Jun/2010:16:30:35   -0700]
kln     -       -       [15/Jun/2010:18:00:34   -0700]

Otherwise it gets a lot more complicated and you have to look for shell libraries that are posted on this forum.

Last edited by Scrutinizer; 06-20-2010 at 07:42 AM..
 

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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)
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