If you do "datecalc -j yyyy mm dd" , datecalc will try to compute the modified julian day number of the date. This will fail if the date is not valid. You can simply test the return code:
Here I sent stderr to /dev/null. But datecalc will write a specific error message to stderr if it detects an invalid date. You may want to just send the error on to the user.
Or you can can look at datecalc to see how to test the validity of a date. But it takes some code to this, mostly due to the complex rules involving leap year.
I have one script.for that the inputs are fromdate(dd/mon/yyyy) and todate(dd/mon/yyyy).
How i can validate the input format?for eg.27/08/2008 is not valid.27/aug/2008 or 27/Aug/2008 are valid.
and the todate is optional.so if the todate is not present in the input then i need to assign the... (6 Replies)
Hi,
I want to validate if the given input is a valid month (written in long month format)
Jan / Feb / Mar / Apr / May / Jun etc etc
This is what I've got with || (or statements):
#!/usr/bin/ksh
INPUT_DATE=$1
FORMATTED_DATE=`date | cut -f2 -d' '`
#If there's no input use the... (1 Reply)
the user inputs names that have to be inside square brackets
I want to check if the user puts the brackets and if not ask him to re-enter the names (9 Replies)
Hi..
I'm a newbie in KSH. Need help. How can I validate input date format in argument using format mm/dd/yy. Eg. > findlog.sh 12/30/09. Any info/help is highly appreciated. (3 Replies)
Hi,
This will most likely be a simple answer.
Currently I have a situation where my script will be sent various options:
-o1 -o2 -oe3@somthing.com
Now, if I want to run a certain command based on the option I am sent, I am doing the following.
for o in $(echo $options)
do
if
... (3 Replies)
how to check input date format.
for example $input_date must be in format dd.mm.gg
script is execute like this:
bin/script1.sh 14.12.2009
script1.sh code:
#!/bin/sh
input_date=$1
CMD="/app/si/test/test.sh $input_date"
echo "*****"
$CMD (2 Replies)
The scope of the shell/perl script is to read the input text file. Validate the expiry date of each certificate and send the mail to the user. The user takes action to add the new certificate to the storage file and user owns the responsibility to update the input text file with the new certificate... (5 Replies)
$Input_filename=$ARGV;
if (!-d $Input_filename && ! -e $Input_filename)
{
print "USAGE: Please enter '$ABCD/def/dsed.txt' as an arguement \n";
exit;
}
1. Input Is suppose to be something like "$ABCD/def/dsed.txt".
if the input is wrong the script should throw an ERROR message.... (2 Replies)
Here is my sample data
Test.txt
column 1|columne 2|start Date|end Date
test|test|03/24/2014|03/24/2014
test|test|03/24-2014|03/24/2014
test|test|03/24/2014|03/24/2014
test|test|03/24/2014|03/24-2014
test|test|03/24/2014|03/24/2014
Now in the file i am expecting the date fields should be... (4 Replies)
Discussion started by: krish2014
4 Replies
LEARN ABOUT FREEBSD
easterog
CALENDAR(3) BSD Library Functions Manual CALENDAR(3)NAME
easterg, easterog, easteroj, gdate, jdate, ndaysg, ndaysj, week, weekday -- Calendar arithmetic for the Christian era
LIBRARY
Calendar Arithmetic Library (libcalendar, -lcalendar)
SYNOPSIS
#include <calendar.h>
struct date *
easterg(int year, struct date *dt);
struct date *
easterog(int year, struct date *dt);
struct date *
easteroj(int year, struct date *dt);
struct date *
gdate(int nd, struct date *dt);
struct date *
jdate(int nd, struct date *dt);
int
ndaysg(struct date *dt);
int
ndaysj(struct date *dt);
int
week(int nd, int *year);
int
weekday(int nd);
DESCRIPTION
These functions provide calendar arithmetic for a large range of years, starting at March 1st, year zero (i.e., 1 B.C.) and ending way beyond
year 100000.
Programs should be linked with -lcalendar.
The functions easterg(), easterog() and easteroj() store the date of Easter Sunday into the structure pointed at by dt and return a pointer
to this structure. The function easterg() assumes Gregorian Calendar (adopted by most western churches after 1582) and the functions
easterog() and easteroj() compute the date of Easter Sunday according to the orthodox rules (Western churches before 1582, Greek and Russian
Orthodox Church until today). The result returned by easterog() is the date in Gregorian Calendar, whereas easteroj() returns the date in
Julian Calendar.
The functions gdate(), jdate(), ndaysg() and ndaysj() provide conversions between the common "year, month, day" notation of a date and the
"number of days" representation, which is better suited for calculations. The days are numbered from March 1st year 1 B.C., starting with
zero, so the number of a day gives the number of days since March 1st, year 1 B.C. The conversions work for nonnegative day numbers only.
The gdate() and jdate() functions store the date corresponding to the day number nd into the structure pointed at by dt and return a pointer
to this structure.
The ndaysg() and ndaysj() functions return the day number of the date pointed at by dt.
The gdate() and ndaysg() functions assume Gregorian Calendar after October 4, 1582 and Julian Calendar before, whereas jdate() and ndaysj()
assume Julian Calendar throughout.
The two calendars differ by the definition of the leap year. The Julian Calendar says every year that is a multiple of four is a leap year.
The Gregorian Calendar excludes years that are multiples of 100 and not multiples of 400. This means the years 1700, 1800, 1900, 2100 are
not leap years and the year 2000 is a leap year. The new rules were inaugurated on October 4, 1582 by deleting ten days following this date.
Most catholic countries adopted the new calendar by the end of the 16th century, whereas others stayed with the Julian Calendar until the
20th century. The United Kingdom and their colonies switched on September 2, 1752. They already had to delete 11 days.
The function week() returns the number of the week which contains the day numbered nd. The argument *year is set with the year that contains
(the greater part of) the week. The weeks are numbered per year starting with week 1, which is the first week in a year that includes more
than three days of the year. Weeks start on Monday. This function is defined for Gregorian Calendar only.
The function weekday() returns the weekday (Mo = 0 .. Su = 6) of the day numbered nd.
The structure date is defined in <calendar.h>. It contains these fields:
int y; /* year (0000 - ????) */
int m; /* month (1 - 12) */
int d; /* day of month (1 - 31) */
The year zero is written as "1 B.C." by historians and "0" by astronomers and in this library.
SEE ALSO ncal(1), strftime(3)STANDARDS
The week number conforms to ISO 8601: 1988.
HISTORY
The calendar library first appeared in FreeBSD 3.0.
AUTHORS
This manual page and the library was written by Wolfgang Helbig <helbig@FreeBSD.org>.
BUGS
The library was coded with great care so there are no bugs left.
BSD November 29, 1997 BSD