Sponsored Content
Top Forums Shell Programming and Scripting Function to get previous month Post 302306095 by Lincy on Saturday 11th of April 2009 01:19:43 AM
Old 04-11-2009
Function to get previous month

Can someone help me creating a function which will give me previous months.

like for example if the date is 200902 and if i call my function and pass a parameter 2 i want to get 200812 as the answer.

or if i pass 200902 with a parameter 7 then my function should give me the date as 200807.
 

9 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

file name using previous month

This has probably been asked 100 times, but I couldn't find any articles on point. I have a script that runs on the last day of every month at 11:30pm. If cats a number of input tables that were created the previous month (or earlier), combines them into one master file and erases the indivual... (1 Reply)
Discussion started by: beilstwh
1 Replies

2. Shell Programming and Scripting

How to get previous month files

Hi, My task to to delete files which are of previous months. I have files named as follows *CCYYMMDD.xls. on a particular day i have delete previous months files i.e in Dec i have delete all nov files which look like 200511DD.XLS in Jan i have to delete all Dec files 200512DD.xls ... (7 Replies)
Discussion started by: savitha
7 Replies

3. Shell Programming and Scripting

How to get the Previous month in Korn Shell

Hi I have a requirement where i have to append the prev month (e.g Feb for current date ) to the file name before sending it for some other processing. if input file name is xyz.txt output for the today's run should be xyz_Feb.txt. i tried this code 1 curmth=`date +%m` 2 mth=(Dec Jan Feb... (1 Reply)
Discussion started by: nvuradi
1 Replies

4. Shell Programming and Scripting

Help, I need to get the last date of previous month

Hi, I'm new with Unix, I'm trying to get a last day of previous month with this format: %b %d %Y (example: Feb 25 2008). Here is what I have so far. #!/bin/ksh cur_month=`date +%m` cur_year=`date +%Y` prev_month=$(($cur_month-1)) # Check to see if this is January if then ... (11 Replies)
Discussion started by: sirrtuan
11 Replies

5. UNIX for Dummies Questions & Answers

How to get the previous month by using `date`

Hello, I'm new to shell scripting. We've develop a script which will grep a file on the search criteria, MON (Jan/Feb/Mar/etc). But we should set this sript in cron which will run on every first day of the month. The problem I'm having is, when I run the script, it is displaying the contents of... (7 Replies)
Discussion started by: suneelj
7 Replies

6. UNIX for Dummies Questions & Answers

print previous month (current month minus 1) with Solaris date and ksh

Hi folks month=`date +%m`gives current month Howto print previous month (current month minus 1) with Solaris date and ksh (7 Replies)
Discussion started by: slashdotweenie
7 Replies

7. UNIX for Dummies Questions & Answers

Finding days in previous month

#!/bin/ksh day=1 month=1 year=2012 if then then prevmonth=31 elif then prevmonth=30 elif then then prevmonth=29 elif then prevmonth=29 else prevmonth=28 fi (4 Replies)
Discussion started by: vagar11
4 Replies

8. UNIX for Dummies Questions & Answers

Get the previous month from date

Hi All, I am using the below code to get the year and month from date: Below gives output like 201212. dt=`date '+%Y%m'` how do i get the previous month value(ie: subtract 1 from date) example output: dt=201211 Please help. :confused: (3 Replies)
Discussion started by: abhi_123
3 Replies

9. Shell Programming and Scripting

Help with getting last date of previous month and first date of previous 4th month from current date

I have requirment to get last date of previous month and the first date of previous 4th month: Example: Current date: 20130320 (yyyymmdd) Last date of previous month: 20130228 (yyyymmdd) First date of previous 4th month: 20121101 (yyyymmdd) In my shell --date, -d, -v switches are not... (3 Replies)
Discussion started by: machomaddy
3 Replies
CAL(1)							    BSD General Commands Manual 						    CAL(1)

NAME
cal, ncal -- displays a calendar and the date of Easter SYNOPSIS
cal [-3hjy] [-A number] [-B number] [[month] year] cal [-3hj] [-A number] [-B number] -m month [year] ncal [-3bhjJpwySM] [-A number] [-B number] [-s country_code] [[month] year] ncal [-3bhJeoSM] [-A number] [-B number] [year] ncal [-CN] [-H yyyy-mm-dd] [-d yyyy-mm] DESCRIPTION
The cal utility displays a simple calendar in traditional format and ncal offers an alternative layout, more options and the date of Easter. The new format is a little cramped but it makes a year fit on a 25x80 terminal. If arguments are not specified, the current month is dis- played. The options are as follows: -h Turns off highlighting of today. -J Display Julian Calendar, if combined with the -e option, display date of Easter according to the Julian Calendar. -e Display date of Easter (for western churches). -j Display Julian days (days one-based, numbered from January 1). -m month Display the specified month. If month is specified as a decimal number, it may be followed by the letter 'f' or 'p' to indicate the following or preceding month of that number, respectively. -o Display date of Orthodox Easter (Greek and Russian Orthodox Churches). -p Print the country codes and switching days from Julian to Gregorian Calendar as they are assumed by ncal. The country code as deter- mined from the local environment is marked with an asterisk. -s country_code Assume the switch from Julian to Gregorian Calendar at the date associated with the country_code. If not specified, ncal tries to guess the switch date from the local environment or falls back to September 2, 1752. This was when Great Britain and her colonies switched to the Gregorian Calendar. -w Print the number of the week below each week column. -y Display a calendar for the specified year. This option is implied when a year but no month are specified on the command line. -3 Display the previous, current and next month surrounding today. -1 Display only the current month. This is the default. -A number Months to add after. The specified number of months is added to the end of the display. This is in addition to any date range selected by the -y, -3, or -1 options. For example, ``cal -y -B2 -A2'' shows everything from November of the previous year to Febru- ary of the following year. Negative numbers are allowed, in which case the specified number of months is subtracted. For example, ``cal -y -B-6'' shows July to December. And ``cal -A11'' simply shows the next 12 months. -B number Months to add before. The specified number of months is added to the beginning of the display. See -A for examples. -C Switch to cal mode. -N Switch to ncal mode. -d yyyy-mm Use yyyy-mm as the current date (for debugging of date selection). -H yyyy-mm-dd Use yyyy-mm-dd as the current date (for debugging of highlighting). -M Weeks start on Monday. -S Weeks start on Sunday. -b Use oldstyle format for ncal output. A single parameter specifies the year (1-9999) to be displayed; note the year must be fully specified: ``cal 89'' will not display a calendar for 1989. Two parameters denote the month and year; the month is either a number between 1 and 12, or a full or abbreviated name as speci- fied by the current locale. Month and year default to those of the current system clock and time zone (so ``cal -m 8'' will display a calen- dar for the month of August in the current year). Not all options can be used together. For example, the options -y, -3, and -1 are mutually exclusive. If inconsistent options are given, the later ones take precedence over the earlier ones. A year starts on January 1. SEE ALSO
calendar(3), strftime(3) HISTORY
A cal command appeared in Version 5 AT&T UNIX. The ncal command appeared in FreeBSD 2.2.6. The output of the cal command is supposed to be bit for bit compatible to the original Unix cal command, because its output is processed by other programs like CGI scripts, that should not be broken. Therefore it will always output 8 lines, even if only 7 contain data. This extra blank line also appears with the original cal command, at least on solaris 8 AUTHORS
The ncal command and manual were written by Wolfgang Helbig <helbig@FreeBSD.org>. BUGS
The assignment of Julian-Gregorian switching dates to country codes is historically naive for many countries. Not all options are compatible and using them in different orders will give varying results. BSD
March 14, 2009 BSD
All times are GMT -4. The time now is 10:38 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy