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Full Discussion: Need last month files after 10th of every month
Top Forums Shell Programming and Scripting Need last month files after 10th of every month Post 302909733 by Don Cragun on Friday 18th of July 2014 04:56:26 PM
Old 07-18-2014
There seems to be a lot of complicated processing going on for something that seems pretty simple. I'm also not sure that I understand which files are to be moved. If you run your script on the last day of July, is it supposed to move files dated June 10-30, or files dated July 10-31?

I think you said you want to move June files if you run it in July, so try something like the following:
Code:
#!/bin/ksh
cd /path/to/source/directory

# Get current month and year:
read m y <<-EOF
	$(date +'%m %Y')
EOF
# Calculate previous monht:
if [ $m = 01 ]
then	m=12
	y=$((y - 1))
else	m=$(printf '%02d' $((${m#0} - 1)))
fi

# Move files with names of the form *MMDDYYYY.TXT and *YYYYMMDD.TXT where MM
# and YYYY match the previous month and DD matches a day >= 10 to a new
# directory.
echo mv *$m[1-3][0-9]$y.TXT *$y$m[1-3][0-9].TXT /path/to/destination/directory

If you want it to remove July files when you run it in July, remove the code in red and change previous in the comment to current.

This was tested with ksh but will also work with bash or any other shell that supports POSIX shell parameter expansions, command substitution, and arithmetic expansions. If the echo shows that the right list of files are being passed to mv, remove the echo on the last line of the script to actually move the files. When running this script any time in July 2014 with the list of files you provided in the 1st message in this thread, the above script produces the output:
Code:
mv LA_AUTO_06112014.TXT MA_AUTO_06212014.TXT ZA_AUTO_06232014.TXT AUTO_F1_20140610.TXT BUTO_F1_20140616.TXT /path/to/destination/directory

If there are too many files to move, the mv could fail due to ARG_MAX limits. If this is a problem in your situation, there are several ways to work around it.
 

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LEARN ABOUT REDHAT

cal

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

NAME

     cal -- displays a calendar

SYNOPSIS

     cal [-smjy13] [[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.  (This is the default.)

     -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.

     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.	If no parameters are specified, the current month's calendar is displayed.

     A year starts on Jan 1.

     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.

BSD
								   June 6, 1993 							       BSD
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