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Top Forums Shell Programming and Scripting Need some help with an archive script Post 302416226 by pseudocoder on Sunday 25th of April 2010 05:40:15 PM
Old 04-25-2010
@itkamaraj
Your solution won't work for me:
Code:
$ month=`date +%m`
$ echo $month
04
$ prev_month=`date -d "-1 month" +%m`
usage: date [-jnu] [-d dst] [-r seconds] [-t west] [-v[+|-]val[ymwdHMS]] ... 
            [-f fmt date | [[[[[cc]yy]mm]dd]HH]MM[.ss]] [+format]
$

@JKMlol
Here is my solution, but please(!) don't run it immediately against your live data.
First make a backup of all the directories and files that will be affected (/home/misc/images),
so you can restore them, if something goes wrong.
Code:
#!/bin/sh

month=`date +%m`

if [ $month -eq 01 ] ; then

    prev_month=12

elif [ $month -eq 12 ] ; then

    prev_month=11

elif [ $month -eq 11 ] ; then

    prev_month=10

elif [ $month -eq 10 ] ; then

    prev_month=9

else

   prev_month=`echo -n 0 && echo $month-1 | bc`

fi

folders="folder1 folder2 folder3 folder4 folder5"

for f in `echo $folders`
do
# comment the next line out when you know exactly what it does
# rm -v /home/misc/images/archive/$f/* 
cp -v /home/misc/images/$f/img_$month*.jpg /home/misc/images/archive/$f/
cp -v /home/misc/images/$f/img_$prev_month*.jpg /home/misc/images/archive/$f/
done

 

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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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