Login or Register to Ask a Question and Join Our Community

Sponsored Content
Full Discussion: How to find second and fourth Monday of the month?
Top Forums UNIX for Dummies Questions & Answers How to find second and fourth Monday of the month? Post 302948556 by Prathmesh on Tuesday 30th of June 2015 11:56:28 AM
Old 06-30-2015
Quote:
Originally Posted by fpmurphy
ksh93 have builtin support for such date queries

For example:
Code:
$ printf "%T\n"   "second monday june"
Mon Jun  8 00:00:00 EDT 2015
$ printf "%T\n"   "fourth monday june"
Mon Jun 22 00:00:00 EDT 2015

You can format the output anyway you like.

For example:
Code:
$ printf "%(%D)T\n"   "fourth monday june"
06/22/15

Thanks. Although my shell does not support it. It is good thing to know.

---------- Post updated at 09:26 PM ---------- Previous update was at 09:19 PM ----------

Quote:
Originally Posted by rbatte1
For my part, in the line:-
Code:
((weekofmonth=1+$dayofmonth/7))

... the logic is that I divide the day of the month by seven (losing any remainder) and that gives me a value between zero and four. I add the 1 to make it easier to understand when testing, i.e. 1 for first week, 2 for second week etc.

That's all,
Robin
Hi Robin,

I had modified your code and tried to check for one year. It is showing some discrepancies.

Can you please advise here.

Code:
$ cat Monday_Date.sh
#!/bin/bash

YEAR=2015
for MONTH in `seq -w 1 12`
do
        for DATE in `seq -w 1 31`
        do
                dayofmonth=`date -d"${YEAR}${MONTH}${DATE}" +%d`
                dayofweek=`date -d"${YEAR}${MONTH}${DATE}" +%w`
                ((weekofmonth=1+$dayofmonth/7))

                if [ $dayofweek -ne 1 -o \( $weekofmonth -ne 2 -a $weekofmonth -ne 4 \) ]
                then
                        #printf "Not running today.\n"
                        continue
                else
                        MONDAY_DATE=`date -d"${YEAR}${MONTH}${DATE}" +%d.%m.%Y`
                        echo "$MONDAY_DATE"
                fi
        done
done

Output:
Code:
$ sh Monday_Date.sh 2>/dev/null
12.01.2015
26.01.2015
09.02.2015
23.02.2015



09.03.2015
23.03.2015
13.04.2015
27.04.2015

11.05.2015
25.05.2015
08.06.2015
22.06.2015

13.07.2015
27.07.2015
10.08.2015
24.08.2015
07.09.2015
21.09.2015

12.10.2015
26.10.2015
09.11.2015
23.11.2015

07.12.2015
21.12.2015
$

Second and Fourth Monday dates for December and September seems to be wrong.
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Crontab First Monday of Month only

Is there a way to setup a cronjob that will only run on the first monday of the month? (3 Replies)
Discussion started by: molonede
3 Replies

2. Shell Programming and Scripting

Find all files by month

Hi, I am trying to do achieving of files by months. find /test -name \*.* -mtime +30 will give me the result of all modified files after 30 days. But lets say i want to list all files that is modified in last months... what is the command to do it? Thanks! (13 Replies)
Discussion started by: maldini
13 Replies

3. Shell Programming and Scripting

how can i find the third friday of each month?

Help please! I need to read the calendar and put the date of the third Friday of each month into a variable for comparison in an "if" statement. How would I do this? Thnx, leslie02 (10 Replies)
Discussion started by: leslie02
10 Replies

4. UNIX for Dummies Questions & Answers

find out month from a date

I would like to find out the month from a given date, how is it possible. (5 Replies)
Discussion started by: rudoraj
5 Replies

5. UNIX for Dummies Questions & Answers

I wanted to get the date of the first monday of a month.

Hi, I need to display the date of the first monday of a month. Can any one please help me on this. Thanks in advance. (6 Replies)
Discussion started by: Sheethal
6 Replies

6. UNIX for Dummies Questions & Answers

cron script -run every 2nd day of month except Monday

I know I can't schedule this in cron and would have to write a wrapper around my script and schedule it in cron ....but not sure how do to this? How do I exclude Monday if the 2nd day of the month falls on a Monday? Thanks. I tried this: 0 0 2 * 0,2-6 command And I know this doesnt... (2 Replies)
Discussion started by: newtou
2 Replies

7. UNIX for Advanced & Expert Users

Crontab For First Monday Of Every Month!!

Hi, Could any one please let me know the crontab entry for scheduling a job for every first monday of the month? Thank You in advance, Sue (2 Replies)
Discussion started by: pyaranoid
2 Replies

8. HP-UX

How to find a file created in UNIX every monday.???

Hi All Any one please suggest me... I have one directory every monday one file will be created in that directory. so if the file is created on monday or not i need check first. How can write a script??? if the file is not created i want to quit from script. Thanks K.Srinivas (5 Replies)
Discussion started by: k_s_rao7
5 Replies

9. UNIX for Advanced & Expert Users

How to find last two files for a month?

Hi All, I need to find last two files for the month. lets say there are following files in directory -rwxr-xr-x 1 user userg 1596 Mar 19 15:43 c.txt -rwxr-xr-x 1 user userg 1596 Mar 21 15:43 d.txt -rwxr-xr-x 1 user userg 1596 Mar 22 15:43 f.txt -rwxr-xr-x 1... (14 Replies)
Discussion started by: Makarand Dodmis
14 Replies

10. Shell Programming and Scripting

Find one month before date

Hi, I want two dates one will be the current date and the other one will be just one month before. Say if current month is 11/4/2014 then the other date should be 11/3/2014. #!/bin/ksh currentDtae=`date` oneMonthBefore= ? I dont know how to do it. Went through some of the related threads... (15 Replies)
Discussion started by: Sharma331
15 Replies
All times are GMT -4. The time now is 02:28 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy