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Full Discussion: backup files for a specific month
Top Forums Shell Programming and Scripting backup files for a specific month Post 302072092 by thestevew on Thursday 27th of April 2006 10:33:02 AM
Old 04-27-2006
An alternative is to try to match the Month and year in a directory listing - tho the change from "dd Mmm hh:mm" format to "dd Mmm yyyy" when a file gets to six months old complicates this.
I would be a good idea to log the details of files deleted too!

Code:
Code
# note proper parameter validation (e.g. mon between 1 and 12 inclusive)
# script also assumes that you have read/write access to all subdirectories

scriptname=$(basename $0)
if [ $# -ne 3 ]; then
  print "usage: $scriptname MonthNumber YearNumber directory, e.g. '$scriptname 4 2006 /tmp'"
  exit 0
fi

set -A monnames Zero Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
typeset -i mon=$1
typeset -i yr=$2
typeset -i thisyr=$(date +%Y)
typeset -i lastyr=$(($thisyr -1))
typeset -i thismon=$(date +%m)
typeset -i fmon

print "Print Deleting files from ${monnames[$mon]} $yr in directory $3"

find $3 -type f -ls | sed -e's/ *//' | tr -s ' ' | cut -d' ' -f8- | while read fmonname fday fyrtime ffilename
do

# Get month number from month name in file list
  fmon=1
  while :
  do
    if [ $fmonname = ${monnames[$fmon]} ]; then
      break
    fi
    fmon=$(($fmon + 1))
  done

# if the last part of the timestamp is a time rather than a yr then
# we need to find the yr it belongs to

  if [[ $fyrtime = *:* ]]; then

#   if month number is not greater than current month number then it is in this yr ...
    if [ $fmon -le $thismon ]; then
      fyrtime=$thisyr
    else

#     ... otherwise it's last yr
      fyrtime=$lastyr
    fi
  fi

  if [ $fmon = $mon ]&&[ $fyrtime = $yr ]; then
    print "deleting $fname dated $fday $fmon $fyrtime $ffilename"
    -- backup $ffilename somehow --
  fi
done
~

any help?

cheers
Last edited by thestevew; 04-28-2006 at 07:26 AM..
 

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LEARN ABOUT SUSE

cal

CAL(1)							    BSD General Commands Manual 						    CAL(1)

NAME

     cal -- displays a calendar

SYNOPSIS

     cal [-smjy13] [[[day] month] year]

DESCRIPTION

     Cal displays a simple calendar.  If arguments are not specified, the current month is displayed.  The options are as follows:

     -1      Display single month output.  (This is the default.)

     -3      Display prev/current/next month output.

     -s      Display Sunday as the first day of the week.

     -m      Display Monday as the first day of the week.

     -j      Display Julian dates (days one-based, numbered from January 1).

     -y      Display a calendar for the current year.

     -V      Display version information and exit.

     A single parameter specifies the year (1 - 9999) to be displayed; note the year must be fully specified: ``cal 89'' will not display a calen-
     dar for 1989.  Two parameters denote the month (1 - 12) and year.	Three parameters denote the day (1-31), month and year, and the day will
     be highlighted if the calendar is displayed on a terminal.  If no parameters are specified, the current month's calendar is displayed.

     A year starts on Jan 1. The first day of the week is determined by the locale.

     The Gregorian Reformation is assumed to have occurred in 1752 on the 3rd of September.  By this time, most countries had recognized the ref-
     ormation (although a few did not recognize it until the early 1900's.)  Ten days following that date were eliminated by the reformation, so
     the calendar for that month is a bit unusual.

HISTORY

     A cal command appeared in Version 6 AT&T UNIX.

OTHER VERSIONS

     Several much more elaborate versions of this program exist, with support for colors, holidays, birthdays, reminders and appointments, etc.
     For example, try the cal from http://home.sprynet.com/~cbagwell/projects.html or GNU gcal.

AVAILABILITY

     The cal command is part of the util-linux-ng package and is available from ftp://ftp.kernel.org/pub/linux/utils/util-linux-ng/.

BSD
								   June 6, 1993 							       BSD
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