Sponsored Content
Top Forums Shell Programming and Scripting Number of days between the current date and user defined date Post 302500664 by hiten.r.chauhan on Tuesday 1st of March 2011 08:34:36 AM
Old 03-01-2011
Number of days between the current date and user defined date

I am trying to find out the number of days between the current date and user defined date.

I took reference from here for the date2jd() function.
Modified the function according to my requirement. But its not working properly.

Original code from here is working fine.

Code:
#!/bin/sh
########### date2jd function ############
date2jd() {
 integer ijd day month year mnjd jd lday
        year=$1
        month=$2
        day=$3
        echo $year
        echo $month
        echo $day
        ((standard_jd = day - 32075 
           + 1461 * (year + 4800 - (14 - month)/12)/4 
           + 367 * (month - 2 + (14 - month)/12*12)/12 
           - 3 * ((year + 4900 - (14 - month)/12)/100)/4))
        ((jd = standard_jd-2400001))
 echo $jd
        return 0
}
########### user defined date ###########
echo 'Enter date in the format dd/mm/yyyy'
read DATE
DD=`echo $DATE | cut -c1-2`
MM=`echo $DATE | cut -c4-5`
YYYY=`echo $DATE | cut -c7-10`
####### current date ############
DD2=`date '+%d'`
MM2=`date '+%m'`
YYYY2=`date '+%Y'`
jd1=$(date2jd $YYYY1 $MM1 $DD1) || exit $?
jd2=$(date2jd $YYYY2 $MM2 $DD2) || exit $?
((jd3=jd2-jd1))
  echo $jd3

Please help.
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

How to find a date which is 7 days past when given current date

hii all. I have to get the date of the 7th day past from the current date. if i give the current date as sep 3 then i must get the date as 27th of august. can we get the values from the "cal" command. cal | awk '{print $2}' will this type of command work. actually my need is if today is... (17 Replies)
Discussion started by: ladtony
17 Replies

2. Shell Programming and Scripting

How to increment a user defined date value in the DATE format itself using shell script?

I need to increment a date value through shell script. Input value consist of start date and end date in DATE format of unix. For eg. I need increment a date value of 1/1/09 to 31/12/09 i.e for a whole yr. The output must look like 1/1/09 2/2/09 . . . 31/1/09 . . 1/2/09 . 28/2/09... (1 Reply)
Discussion started by: sunil087
1 Replies

3. Shell Programming and Scripting

how to get what date was 28 days ago of the current system date IN UNIX

Hi, Anybody knows how to get what date was 28 days ago of the current system date through UNIX script. Ex : - If today is 28th Mar 2010 then I have to delete the files which arrived on 1st Mar 2010, (15 Replies)
Discussion started by: kandi.reddy
15 Replies

4. Shell Programming and Scripting

Date after 5 days from current date in YYYYMMDD format

Hello Experts, How do i get date after 5 days from current date in YYYYMMDD format? How do you compare date in YYYYMMDD format? Thanks (8 Replies)
Discussion started by: needyourhelp10
8 Replies

5. Shell Programming and Scripting

How to Get 60 days Old date from current date in KSH script

Hi i am writing a cron job. so for it i need the 60 days old date form current date in variable. Like today date is 27 jan 2011 then output value will be stote in variable in formet Nov 27. i am using EST date, and tried lot of solution and see lot of post but it did not helpful for me. so... (3 Replies)
Discussion started by: Himanshu_soni
3 Replies

6. Shell Programming and Scripting

How to display a date, 30 days from the current date?

Well guys, I know the right syntax for displaying the current date is $(date). However, I am planning to send emails to some customers which displays their subscription date, and then the expiry. The expiry being 30 days from the current date. What would the right syntax be? (6 Replies)
Discussion started by: xxxx
6 Replies

7. Shell Programming and Scripting

Seven days past date from current date

hi all.. i want 2 know how 2 find 7days past date from current date.. when i used set datetime = `date '+%m%d%y'` i got 060613.. i just want to know hw to get 053013.. i tried using date functions but couldnt get it :( i use c shell and there is no chance that i can change that ..... (3 Replies)
Discussion started by: Rahul619
3 Replies

8. UNIX for Dummies Questions & Answers

Subtracting number of days from current date

Hi All, I am using KSH shell and need to subtract n number of days from the current date .. kindly suggest ! Thanks in advance!:) (20 Replies)
Discussion started by: dev.devil.1983
20 Replies

9. UNIX for Beginners Questions & Answers

Subscribers with Date 90 days older than current date

I have to display only those subscribers which are in "unconnected state" and the date is 90 days older than today's date. Below command is used for this purpose: cat vfsubscriber_20170817.csv | sed -e 's/^"//' -e '1d' | nawk -F '",' '{if ( (substr($11,2,4) == 2017) && ( substr($11,2,8) -lt... (1 Reply)
Discussion started by: dia
1 Replies

10. HP-UX

awk command in hp UNIX subtract 30 days automatically from current date without date illegal option

current date command runs well awk -v t="$(date +%Y-%m-%d)" -F "'" '$1 < t' myname.dat subtract 30 days fails awk -v t="$(date --date="-30days" +%Y-%m-%d)" -F "'" '$1 < t' myname.dat awk command in hp unix subtract 30 days automatically from current date without date illegal option error... (20 Replies)
Discussion started by: kmarcus
20 Replies
DATE(1) 						      General Commands Manual							   DATE(1)

NAME
date - print or set the date and time SYNOPSIS
date [-qsu] [[MMDDYY]hhmm[ss]] [+format] OPTIONS
-q Read the date from stdin -s Set the time (implicit for -q or a date string) -u Print the date as GMT -t Use this number of seconds instead of current time EXAMPLES
date # Print the date and time date 0221921610 # Set date to Feb 21, 1992 at 4:10 p.m. DESCRIPTION
With the -q flag or a numeric argument, date sets the GMT time and date. MMDDYY refers to the month, day, and year; hhmmss refers to the hour, minute and second. Each of the six fields must be exactly two digits, no more and no less. date always display the date and time, with the default format for the system. The -u flag request GMT time instead of local time. A format may be specified with a + followed by a printf-like string with the following options: %% % character %A Name of the day %B Name of the month %D mm/dd/yy %H Decimal hour on 2 digits %I Decimal hour modulo 12 on 2 digits %M Decimal minute on 2 digits %S Decimal seconds on 2 digits %T HH:MM:SS %U Decimal week number, Sunday being first day of week %W Decimal week number, Monday being first day of week %X Same as %T %Y Decimal year on 4 digits %Z Time Zone (if any) %a Abbreviated name of the day %b Abbreviated name of the month %c Appropriate date & time (default format) %d Decimal day of the month on 2 digits %e Same as %d, but a space replaces leading 0 %h Same as %b %j Decimal dey of the year on 3 digits %m Decimal month on 2 digits %n Newline character %p AM or PM %r 12-hour clock time with AM/PM %s Number of seconds since the epoch %t Tab character %w Decimal day of the week (0=Sunday) %x Same as %D %y Decimal year on 2 digits SEE ALSO
time(2), ctime(3), readclock(8). DATE(1)
All times are GMT -4. The time now is 10:30 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy